Carb Cycling and Carb Loading: How to Use Carbs Without Making Nutrition Weird

Introduction

Carbohydrates have had a difficult few decades.

One minute they're essential fuel.

The next they are apparently responsible for every problem in modern life, including body fat, low discipline, poor sleep, bad skin, and probably your inbox.

Then, just when everyone has decided carbs are the enemy, an athlete eats six bowls of rice before a race and suddenly carbohydrates are performance nutrition again.

Hmmmm....

The truth is much less dramatic.

Carbohydrates are a tool.

Not a moral category.

Not a personality.

Not a spiritual threat.

A tool.

Used well, carbohydrates can support training intensity, glycogen storage, recovery, competition performance and muscle retention during fat-loss phases.

Used badly, they can create energy crashes, poor appetite control, digestive problems, unnecessary weight fluctuations and a lot of nutritional overthinking.

This guide explains the difference between carb cycling and carb loading, when each approach makes sense, and how to use carbohydrates intelligently without turning your diet into a full-time admin job.

Because the goal is not to be high carb or low carb.

The goal is to fuel the work you actually need to do.

Small distinction.

Quite important.

Quick Answer: What Is Carb Cycling?

Carb cycling means adjusting carbohydrate intake based on training demand.

Higher carbohydrate intake is usually placed around harder training days, longer sessions, competition preparation or high-output blocks.

Lower carbohydrate intake may be used on rest days, lighter training days or during controlled fat-loss phases.

The aim is not random carb confusion.

The aim is to match fuel to demand.

In simple terms:

Hard training days need more carbohydrate.

Easy days may need less.

Rest days do not usually need to be treated like stage seven of the Tour de France.

Quick Answer: What Is Carb Loading?

Carb loading is a short-term strategy used to increase muscle glycogen before a major endurance event, high-volume competition, stage day, weigh-in recovery window or demanding performance event.

It usually involves increasing carbohydrate intake for 24 to 72 hours before the event, depending on the sport, athlete and context.

Carb loading is not the same as having pasta because someone said “ we're racing tomorrow.”

It is planned glycogen storage.

Ideally without the digestive drama.

For the wider foundation, see advanced performance nutrition and scaling your diet with training intensity.

Carbs Are Fuel, Not Magic

Carbohydrates are broken down into glucose.

Glucose can be used for energy or stored as glycogen in muscle and liver.

Muscle glycogen is especially important for repeated high-intensity work.

That includes:

• Hard lifting sessions
• Sprint work
• Combat sports
• Team sports
• CrossFit-style events
• High-volume bodybuilding training
• Long endurance sessions
• Interval work
• Tournament days
• Repeated efforts with short recovery

The harder and more glycolytic the work, the more carbohydrates matter.

That does not mean everyone needs high carbs all the time.

It means carbohydrate need depends on output.

Which is annoyingly less marketable than “carbs are bad” or “eat 700g of carbs and become lightning.”

But it is more useful.

What Glycogen Actually Does

Glycogen is stored carbohydrate.

Muscle glycogen supports hard muscular work.

Liver glycogen helps maintain blood glucose, especially between meals and during longer activity.

When glycogen is high, athletes often feel:

• More powerful
• More able to repeat efforts
• Better able to handle volume
• Less flat during training
• Better during high-intensity sessions
• More resilient during competition
• More stable in mood and perceived effort

When glycogen is low, athletes may feel:

• Flat
• Sluggish
• Weaker
• Less explosive
• Less tolerant of volume
• More mentally tired
• Hungrier
• Less able to recover between efforts

This is why very low-carb diets can be difficult for athletes doing repeated hard work.

They can work for some people in some contexts.

But if your sport requires repeated bursts, high output or sustained intensity, carbohydrates are not just decorative.

They are part of the machinery.

Carb Cycling vs Carb Loading

These two terms often get thrown around together, but they are not the same thing.

Carb cycling is a weekly structure.

Carb loading is a short-term pre-event strategy.

Carb cycling asks:

What does today’s training require?

Carb loading asks:

How do we arrive at the event fully fuelled?

Both can be useful.

Both can be overcomplicated into absolute nonsense.

Carb Cycling: The Core Idea

Carb cycling means placing more carbohydrates where they are most useful.

That usually means more carbs on:

• Heavy training days
• High-volume lifting days
• Long endurance days
• Sprint or interval days
• Two-a-day training days
• Competition days
• Refeed days
• Hard team sport days

And fewer carbs on:

• Rest days
• Low-output days
• Light technical sessions
• Recovery days
• Low-volume training days

This does not mean starving on rest days.

It means carbohydrate intake reflects demand.

A rest day still needs enough food to recover.

Recovery is not powered by good intentions.

Example Carb Cycling Structure

A simple week might look like this:

This is the clean version.

The messy version is when someone starts assigning 13g of carbs to Tuesday because Mercury is in deload.

Nope.

Start simple.

Why Carb Cycling Can Help

Carb cycling can help athletes:

• Fuel hard sessions
• Support recovery
• Maintain training quality during fat loss
• Improve appetite control
• Reduce unnecessary calorie intake on low-output days
• Keep carbohydrates available when they matter most
• Avoid chronic under-fuelling
• Avoid eating the same intake regardless of training demand

It is especially useful when calorie needs vary across the week.

If Monday is brutal leg training and Sunday is lying on the sofa pretending mobility work happened, those days do not necessarily need the same carbohydrate intake.

The body notices the difference.

Even if the meal plan doesn't.

Carb Cycling for Fat Loss

Carb cycling can be useful during fat loss because it allows calories and carbs to stay higher on harder training days while being lower on easier days.

This can help preserve performance.

That matters because training quality helps preserve muscle.

A poor fat-loss diet does not just reduce body fat.

It can reduce output, recovery, mood, training drive and your will to answer simple questions politely.

A better approach is usually:

• Keep protein high
• Keep fats sufficient
• Place carbs around harder training
• Reduce calories more from lower-output days
• Track performance, sleep and recovery
• Avoid turning rest days into starvation theatre

For more context, see mini cuts, diet breaks, refeeds vs cheat meals and maintenance phases.

Carb Cycling Is Not a Cheat Code

Carb cycling doesn't override calories.

If average weekly calories are too high, fat loss will not happen just because Wednesday was “low carb.”

If average weekly calories are too low, performance may still suffer even if Saturday was “high carb.”

The weekly picture matters.

Carb cycling changes distribution.

It doesn't suspend physiology.

Rude, but consistent.

High-Carb Days

High-carb days should usually sit where performance demand is highest.

They may be useful for:

• Heavy leg sessions
• High-volume bodybuilding sessions
• Long endurance sessions
• Repeated sprint work
• Combat sport sparring
• Team sport match days
• Double training days
• Refeed days during fat loss
• Competition preparation

High-carb days shouldn't become an excuse to eat randomly.

The point is fuel.

Not recreational cereal with a training alibi.

Useful high-carb foods may include:

• Rice
• Potatoes
• Pasta
• Oats
• Bagels
• Sourdough
• Cereal
• Fruit
• Honey
• Jam
• Sports drinks
• Carb powders
• Rice cakes
• Yoghurt if tolerated

The lower the digestive tolerance or closer to performance, the more useful lower-fibre options may become.

For that, see low-fibre performance diets.

Moderate-Carb Days

Moderate-carb days are useful for normal training sessions.

These might include:

• Upper body sessions
• Technical sport practice
• Moderate conditioning
• Skill sessions
• Shorter endurance work
• Hypertrophy sessions with manageable volume

These days still need carbohydrate.

Just not necessarily huge amounts.

This is where many athletes do well with a balanced plate approach:

• Protein
• Carbohydrate
• Vegetables or fruit
• Some fats
• Fluids and sodium as needed

Not dramatic.

Often effective.

Terrible for social media engagement.

Lower-Carb Days

Lower-carb days may fit:

• Rest days
• Light recovery days
• Low-step days
• Low-volume phases
• Fat-loss periods
• Days far away from competition

But lower carb shouldn't mean:

• No fuel
• No vegetables
• No calories
• No recovery
• No joy
• No functioning brain

A lower-carb day still needs enough protein, fats, micronutrients, fluids and total energy to support the bigger plan.

If your lower-carb day leaves you cold, irritable, starving and staring at biscuits like they owe you money, it may be too aggressive.

Protein and Fat Still Matter

Carb cycling isn't only about carbs.

Protein should usually stay fairly consistent.

That supports:

• Muscle retention
• Recovery
• Satiety
• Adaptation
• Body composition

Dietary fat also matters for:

• Hormonal function
• Energy intake
• Cell membranes
• Absorption of fat-soluble vitamins
• Palatability
• General health

A common mistake is raising carbs and accidentally crushing fats too low for too long.

Another is lowering carbs and replacing them with random fat calories while wondering why fat loss stalls.

Again, weekly structure matters.

Nutrition is rarely ruined by one meal.

It's usually ruined by repeated patterns wearing a confident expression.

Carb Timing Around Training

Carb timing matters most when:

• Training is hard
• Sessions are long
• Sessions are close together
• The athlete is in a calorie deficit
• The athlete competes
• Gut tolerance is an issue
• Performance is being measured

A simple structure:

Before training:

• Carbs help provide available fuel
• Keep fat and fibre moderate if digestion is sensitive
• Use familiar foods

During training:

• Carbs may help if sessions are long, intense or repeated
• More relevant for endurance, team sport, hybrid and long sessions

After training:

• Carbs help restore glycogen
• More urgent if another session follows soon
• Less urgent if the next session is 24 to 48 hours away and total intake is adequate

For deeper context, see intra-workout carbs and hydration and electrolyte balance.

Carb Loading: The Core Idea

Carb loading is designed to increase glycogen stores before an event.

It's most useful when performance depends heavily on stored carbohydrate.

That includes:

• Marathon
• Half marathon
• Triathlon
• Long cycling events
• Ultra-endurance
• Long team sport tournaments
• Multi-event competition days
• Some CrossFit-style competitions
• Long combat sport sessions or tournaments
• Bodybuilding peak week in specific contexts

Carb loading isn't necessary for every gym session.

You don't need a full carb load before doing three sets of lateral raises and checking your phone between them.

Although emotionally, I understand.

Who Actually Needs Carb Loading?

Carb loading is most useful when:

• The event lasts longer than around 90 minutes
• The event includes repeated high-intensity efforts
• Glycogen depletion is likely
• There are multiple events in a short window
• Training volume has been high
• Performance matters
• The athlete has practised it before

It's less useful for:

• Short easy sessions
• Casual gym training
• Very low-intensity activity
• Single short strength sessions
• People who are not already training hard
• Anyone using it as a fancy phrase for overeating

Again, context ruins the fun.

How Long Should Carb Loading Last?

Most carb loads last 24 to 72 hours.

The exact length depends on:

• Event duration
• Athlete size
• Training status
• Current glycogen levels
• Digestive tolerance
• Taper structure
• Sport demands
• Body composition goals
• Weigh-in timing

A one-day carb increase may be enough for some events.

Longer endurance events may need 2 to 3 days.

Carb loading should usually be paired with reduced training volume, otherwise you keep burning through the fuel you are trying to store.

Trying to carb load while training brutally hard is like filling a bath with the plug out and calling it a hydration protocol.

Carb Loading and Tapering

Carb loading works best when training volume drops.

That's because glycogen storage is easier when the body is not constantly depleting it.

A taper may involve:

• Reduced training volume
• Maintained intensity in smaller doses
• Increased carbohydrate intake
• Adequate sodium and fluids
• Lower fibre if gut comfort matters
• Familiar foods
• No last-minute nutritional heroics

The goal is to arrive fuelled, rested and predictable.

Not bloated, anxious and wondering why a new breakfast was introduced at the worst possible time.

Practical Carb Loading Foods

Useful carb-loading foods often include:

• White rice
• Pasta
• Potatoes without skins
• Sourdough
• Bagels
• Low-fibre cereal
• Rice cakes
• Bananas
• Applesauce
• Jam
• Honey
• Sports drinks
• Carb powders
• Fruit juice
• Yoghurt if tolerated

During carb loading, very high-fibre foods can become difficult because they add bulk.

Trying to hit high carbohydrate targets through beans, lentils, huge salads and bran cereal is technically possible.

So is running a marathon in jeans.

The question is why.

For this reason, carb loading often overlaps with low-fibre performance diets.

Carb Loading Is Not Just Pasta

The old pasta-party idea is not entirely wrong.

It's just incomplete.

A proper carb load considers:

• Total carbohydrate intake
• Digestive comfort
• Meal timing
• Fluid intake
• Sodium
• Training taper
• Familiarity
• Event start time
• Race-morning food
• During-event fuelling

One large pasta meal the night before isn't the same as a carb-loading strategy.

It may help.

It may also create a stomach that feels like it has been packed for storage.

Again, individual tolerance matters.

Carb Loading and Water Weight

This is where people panic.

Glycogen stores water.

When carbohydrate intake increases, scale weight often increases.

This isn't automatically fat gain.

It's mostly glycogen, water and gut content.

That can be useful.

Stored carbohydrate and water can support performance.

But if an athlete misunderstands this, they may think the carb load has “made them fat” overnight.

It hasn't.

They have stored fuel.

The scale is reporting weight.

Not giving a moral judgement.

For more on scale weight confusion, see making weight and the whoosh effect.

Carb Loading and Sodium

Sodium matters because carbohydrate storage, fluid balance and performance are connected.

If an athlete increases carbohydrates but cuts sodium aggressively, they may feel flat, thirsty, headachy or poorly hydrated.

This is especially relevant before endurance events, hot conditions, long sessions and sweat-heavy sports.

Sodium supports:

• Fluid balance
• Blood volume
• Nerve signalling
• Muscle contraction
• Glucose absorption
• Rehydration

So no, sodium is not simply “bad.”

That is the sort of advice that sounds clean until performance enters the room.

For more, see sodium manipulation and what electrolytes you lose in sweat.

Carb Loading and Hydration

Carb loading without hydration is incomplete.

Stored glycogen is linked with water storage.

Performance also depends on fluid balance, especially in heat, endurance events and repeated high-output sessions.

A sensible approach includes:

• Drinking consistently
• Including sodium
• Avoiding excessive plain water
• Practising race-day fluids
• Matching intake to sweat rate
• Avoiding last-minute extremes

This links directly with sweat rate testing and hydration for endurance athletes, where fluid, sodium and carbohydrate intake all become more important as session length and sweat loss increase.

Water is not optional.

Annoying, given how many plans treat it like background scenery.

Carb Loading After Making Weight

Carb loading can also matter after weigh-ins.

After making weight, athletes may need to restore:

• Fluids
• Sodium
• Carbohydrates
• Glycogen
• Gut comfort
• Energy
• Confidence

The mistake is thinking the weigh-in is the finish line.

It isn't.

It's the entry requirement.

After that, performance still has to happen.

Post-weigh-in carbohydrate intake should be practised.

Food choices should be familiar.

The athlete should not go from dehydration and low food volume straight into a chaotic buffet and call it recovery.

That's not reloading.

That's digestive roulette.

For the full context, see making weight.

Carb Cycling vs Refeeds

Carb cycling and refeeds overlap, but they are not identical.

Carb cycling adjusts carbs based on training demand.

A refeed is usually a planned temporary increase in calories, often mainly from carbohydrates, during a fat-loss phase.

A refeed may help with:

• Training performance
• Diet adherence
• Glycogen restoration
• Psychological relief
• Short-term energy availability

It doesn't magically erase the stress of dieting.

It's a tool.

Not a festival.

For more, see refeeds vs cheat meals.

Carb Cycling vs Cheat Meals

A carb cycle is planned.

A cheat meal is often emotional.

That doesn't mean cheat meals are always terrible.

But they are less precise.

A high-carb day might involve rice, potatoes, cereal, fruit, bagels and controlled total calories.

A cheat meal might involve a pizza, dessert, snacks and the phrase “back on it tomorrow,” which has witnessed many crimes.

If the goal is performance and body composition, planning usually beats chaos.

Boring.

Effective.

Carb Cycling and Diet Breaks

Diet breaks are longer periods at or around maintenance calories.

They're often used during longer fat-loss phases to reduce diet fatigue, support training, and improve adherence.

Carb cycling can still be used inside a diet break.

For example:

• Higher carbs on hard training days
• Moderate carbs on normal training days
• Slightly lower carbs on rest days
• Calories closer to maintenance overall

The point is to recover from dieting without losing structure entirely.

A diet break isn't “eat like the tracking app has been deleted.”

For more, see diet breaks and reverse dieting.

Carb Cycling for Muscle Gain

During muscle gain phases, carb cycling can still be useful.

Higher carbs can support hard sessions.

Moderate carbs can support normal sessions.

Rest days may not need the same intake as training days.

However, if the goal is gaining muscle, being too aggressive with low days can backfire.

Muscle gain usually needs:

• Enough calories
• Progressive training
• Sufficient protein
• Adequate carbs
• Enough fats
• Sleep
• Recovery
• Consistency

If someone is trying to gain muscle while keeping carbs low, calories low and output high, they may simply be building a very organised disappointment.

Carb Cycling for Endurance Athletes

Endurance athletes often benefit from matching carbohydrate intake to training demand.

Long sessions, intervals and race-specific work usually need more carbohydrate.

Recovery days may need less.

Some endurance athletes use lower-carb sessions strategically to train certain adaptations.

But this should be used carefully.

Low-carb endurance training can increase stress and reduce training quality if overused.

For most athletes, the priority isn't proving they can suffer.

It's adapting to training and performing when it matters.

Carbohydrate availability should support the session’s goal.

Carb Cycling for Strength Athletes

Strength athletes may not need the same carbohydrate intake as endurance athletes, but carbs still matter.

Hard strength training can use significant glycogen, especially when volume is high.

Carbs may support:

• Training volume
• Pump
• Work capacity
• Recovery between sets
• Repeated effort quality
• Mood during hard blocks

Powerlifters, weightlifters and strongman athletes may use higher carbs around heavy or high-volume days.

Lower days may fit rest days or lower-volume technical work.

The bar doesn't care about your diet ideology.

It cares whether you can produce force.

Carb Cycling for Bodybuilding and Physique

Bodybuilding uses carb cycling often, sometimes intelligently, sometimes as nutritional theatre.

Carb cycling may help:

• Manage calories
• Fuel hard sessions
• Support training during fat loss
• Control weekly energy intake
• Structure refeeds
• Adjust fullness and appearance

But it can become obsessive quickly.

If the plan changes every time the mirror looks slightly different under bathroom lighting, the problem is not carbohydrates.

It's decision-making under fluorescent stress.

For physique-specific contexts, see peak week nutrition.

Carb Loading for Peak Week

In peak week, carbohydrate loading may be used to increase muscle fullness.

This is highly individual.

It depends on:

• Current leanness
• Muscle mass
• Previous carbohydrate intake
• Training depletion
• Sodium intake
• Water intake
• Stress
• Digestion
• Athlete experience

Peak week carb loading should be tested before show week where possible.

The final week is not the time to discover that your “perfect carb-up” makes you look smooth, bloated and mildly haunted.

For more, see peak week nutrition.

Carb Cycling and Low Energy Availability

Carb cycling can become a problem when it becomes chronic under-fuelling.

This is especially relevant for endurance athletes, physique athletes, combat sport athletes and anyone trying to stay lean while training hard.

Signs carbohydrate and energy intake may be too low include:

• Poor recovery
• Persistent fatigue
• Reduced performance
• Low mood
• Sleep disruption
• Frequent illness
• Reduced libido
• Menstrual cycle disruption
• Irritability
• Coldness
• Injuries
• Loss of training drive

The issue isn't always carbs alone.

It may be total energy availability.

But carbs are often the first thing people cut and the last thing they admit they need.

For more, see low energy availability in athletes.

Common Carb Cycling Mistakes

Mistake 1: Making Low Days Too Low

Lower carb doesn't mean no carb.

If low days become miserable, recovery may suffer.

A rest day is still a recovery day.

Recovery requires resources.

Astonishingly, the body doesn't rebuild itself from discipline alone.

Mistake 2: Putting High Carbs on the Wrong Days

High-carb days should match demand.

If the highest-carb day is a rest day because it's Saturday and Saturday has snacks, that is not carb cycling.

That's weekend behaviour with terminology.

Mistake 3: Ignoring Weekly Calories

Carb cycling changes distribution.

Weekly calorie intake still matters.

Fat loss, maintenance and muscle gain are still governed by the broader energy picture.

Mistake 4: Cutting Fat Too Low

High-carb phases can push fat intake very low if poorly designed.

Short term, this may be fine.

Long term, it can affect diet quality, hormones, satiety and adherence.

Mistake 5: Treating Carbs as Clean or Dirty

Carbs are not morally ranked.

Food quality matters, but performance nutrition also cares about digestibility, timing and function.

White rice before a race may be more useful than a giant bowl of high-fibre virtue.

Mistake 6: Changing Too Much at Once

If performance improves or worsens, you need to know why.

Changing carbs, calories, sodium, caffeine, fibre and training volume at the same time makes it harder to learn anything.

That's not experimentation.

That's confusion with a notes app.

Common Carb Loading Mistakes

Mistake 1: Waiting Until the Night Before

One huge meal the night before an event isn't a carb load.

It's a digestive challenge with optimism.

Carb loading usually works better when spread across meals.

Mistake 2: Eating Too Much Fibre

High-fibre carb loading can cause bloating, gas and urgency.

That may be manageable in normal life.

Less ideal at mile 18.

Mistake 3: Forgetting Sodium and Fluids

Carb loading works best with sensible hydration and sodium.

Dry carb loading is not clever.

It's just incomplete.

Mistake 4: Trying New Foods

Do not test new gels, cereals, sauces, carb powders or pre-race meals on event day.

Race day is not a buffet audition.

Mistake 5: Panicking About Scale Weight

Carb loading can increase scale weight.

That's expected.

Stored glycogen and water weigh something.

This doesn't mean you ruined your physique or became slower overnight.

Mistake 6: Loading When It Is Not Needed

Not every event needs carb loading.

If the event is short, low intensity or not glycogen-limited, a normal balanced intake may be enough.

More is not always better.

Sometimes more is just more.

A Simple Carb Cycling Framework

Start with training demand.

High-Demand Days

Use higher carbs when training is:

• Long
• Heavy
• High volume
• High intensity
• Repeated
• Sport-specific
• Competitive

Place carbs:

• Before training
• After training
• Across the day
• During training if needed

Moderate-Demand Days

Use moderate carbs when training is:

• Normal length
• Moderate volume
• Technique-focused
• Upper body dominant
• Not highly glycogen-depleting

Low-Demand Days

Use lower carbs when:

• Resting
• Recovering
• Walking only
• Doing light mobility
• Training very lightly

But keep total nutrition adequate.

The aim isn't to win the lowest-carb day.

There is no medal for that.

A Simple Carb Loading Framework

For events where carb loading makes sense:

2 to 3 Days Before

• Reduce training volume
• Increase carbohydrate intake
• Keep foods familiar
• Keep fluids consistent
• Keep sodium sensible
• Reduce fibre if needed

Day Before

• Keep carbs high enough
• Avoid very high-fat meals
• Avoid huge fibre loads
• Avoid new foods
• Spread meals out
• Prepare race-day breakfast

Event Morning

• Eat familiar carbs
• Keep fibre and fat controlled if digestion is sensitive
• Include fluids
• Include sodium if relevant
• Do not suddenly become experimental

The body loves consistency before pressure.

It doesn't enjoy surprises delivered with confidence.

Carb Targets: Should You Use Numbers?

Some athletes benefit from gram-per-kilogram targets.

Others do fine with portion-based planning.

For performance-focused athletes, rough targets may help.

General guide:

The exact number depends on body size, sport, training volume, phase, calorie target and tolerance.

Don't copy someone else’s carb target blindly.

Their output, size, gut, sport and goals may be completely different.

Their best plan may also be bullshit.

Should You Track Carbs?

Tracking can be useful when:

• Performance matters
• Fat loss is the goal
• Body composition is being managed
• Competition is approaching
• Carb loading is being practised
• The athlete needs precision

Tracking is less necessary when:

• Training is casual
• Goals are general health
• Appetite is reliable
• Performance is stable
• Food anxiety is an issue
• The plan is working without it

Tracking should serve the athlete.

If tracking becomes the sport, something has gone sideways.

The Honest Verdict on Carb Cycling and Carb Loading

Carb cycling and carb loading are useful tools.

Carb cycling helps match carbohydrate intake to training demand.

Carb loading helps maximise glycogen before events where stored carbohydrate matters.

Both can improve performance when used properly.

Both can become ridiculous when used without context.

Carbs are not the enemy.

They're not magic either.

They are fuel.

The intelligent approach is simple:

Use more when demand is higher.

Use less when demand is lower.

Load when performance requires it.

Practise before it matters.

Keep digestion, sodium, hydration and total energy in the plan.

And don't turn every gram of carbohydrate into a dramatic personal referendum.

It's just rice.

Calm down.

Summary: Match Carbs to the Job

Carb cycling and carb loading work best when they're tied to a clear purpose.

Carb cycling supports training weeks by putting more fuel around harder work and less around easier days.

Carb loading supports performance events by increasing glycogen before demand is high.

The mistake is treating carbohydrates as either forbidden or unlimited.

Neither is intelligent.

The better question is:

What does this session, event or phase require?

Answer that well, and carbohydrate strategy becomes much simpler.

Less ideology.

More performance.

Annoying how often that works.

Continue Learning

To build the full advanced nutrition picture, read:

• advanced performance nutrition
• scaling your diet with training intensity
• refeeds vs cheat meals
• diet breaks
• reverse dieting
• mini cuts
• maintenance phases
• peak week nutrition
• making weight
• low-fibre performance diets
• intra-workout carbs
• hydration and electrolyte balance
• sodium manipulation
• sweat rate testing
• low energy availability in athletes

Key References

Sports nutrition guidance on carbohydrate availability, glycogen storage and endurance performance.

Research on carbohydrate loading protocols for endurance and prolonged exercise.

Consensus guidance on fuelling for training intensity, recovery and competition demands.

Evidence around low energy availability, carbohydrate restriction and performance outcomes in athletes.

Written By

Written by Chris Simon, Founder of One Life Foods.

Chris has worked in the supplement industry since 2009 and is known for seeking out exceptional ingredients, products, and formulations. Read more about Chris and the story behind One Life Foods.

Disclaimer

This article is for informational purposes only and is not intended to diagnose, treat, cure or prevent any disease. Carb cycling, carb loading, dieting, making weight and competition nutrition should be adapted to the individual athlete, sport, health status and training demands.

If you have diabetes, reactive hypoglycaemia, gastrointestinal disease, a history of disordered eating, low energy availability symptoms, menstrual cycle disruption, are pregnant, breastfeeding, taking medication or preparing for a weight-category sport or endurance event, speak to a qualified healthcare professional, registered dietitian or experienced sports nutrition professional.

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