Performance Nutrition

Nutrition for athletes and active people.

Performance Nutrition Principles

Fuel performance, optimize recovery, support adaptation.

Unlike general fitness nutrition, performance nutrition prioritizes:

  1. Training quality over appearance
  2. Recovery between sessions
  3. Adaptation to training stress
  4. Competition performance

Energy Systems

Understanding how your body produces energy during different activities:

SystemDurationIntensityFuelExamples
Phosphagen (ATP-PC)0-10 secMaximalCreatine phosphateSprints, heavy lifts
Glycolytic (Anaerobic)10 sec - 2 minVery highGlucose/glycogen400m run, HIIT
Oxidative (Aerobic)2+ minLow-moderateCarbs + fatsDistance running, cycling

Implication: Different sports need different nutritional strategies.

Sport-Specific Nutrition

Strength Sports (Powerlifting, Olympic Lifting)

Energy system: Primarily phosphagen

Nutritional priorities:

  1. Adequate calories: Support strength gains
  2. Protein: 0.8-1g/lb bodyweight
  3. Carbs: 2-3g/lb for energy and recovery
  4. Creatine: 5g daily (proven supplement)

Timing:

  • Pre-training: Carbs 1-2 hours before
  • Post-training: Carbs + protein within 2 hours
  • Overall: Eat enough to support training

Weight class athletes: Time cuts carefully, don't compromise training

Bodybuilding/Physique

Goals: Maximize muscle, minimize fat

Nutritional priorities:

  1. Periodization: Bulk and cut phases
  2. Protein: 1g/lb bodyweight (minimum)
  3. Carbs: Higher during bulk (2-3g/lb), lower during cut
  4. Nutrient timing: Pre/post workout important for max gains

Off-season (bulk):

  • Surplus: 200-300 calories
  • Higher carbs for training volume

Contest prep (cut):

  • Deficit: -500 calories
  • Very high protein (1-1.2g/lb)
  • Strategic refeeds

CrossFit/HIIT

Energy systems: All three, emphasis on glycolytic

Nutritional priorities:

  1. Carbs: 2-4g/lb (high training volume)
  2. Protein: 0.8-1g/lb
  3. Hydration: Critical with high sweat rates
  4. Electrolytes: Sodium, potassium

Training day:

  • Pre-WOD: Carbs 1-2 hours before
  • Intra-WOD: Electrolyte drink for long sessions
  • Post-WOD: Carbs + protein immediately

Recovery: Prioritize sleep and calories (don't under-eat)

Endurance (Running, Cycling, Triathlon)

Energy system: Primarily oxidative

Nutritional priorities:

  1. Carbs: 3-5g/lb (up to 7g/lb for ultra-endurance)
  2. Protein: 0.6-0.8g/lb (lower than strength sports)
  3. Fat: 0.4-0.5g/lb (energy source at lower intensities)
  4. Hydration: Plan fluid intake for long efforts

Training nutrition:

  • <60 min: Water only
  • 60-90 min: 30-60g carbs/hour
  • 90+ min: 60-90g carbs/hour + electrolytes

Race day: Practice nutrition strategy in training (don't experiment on race day)

Team Sports (Soccer, Basketball, Football)

Energy systems: Mixed, depends on position

Nutritional priorities:

  1. Carbs: 2-4g/lb for glycogen
  2. Protein: 0.8-1g/lb
  3. Hydration: Critical for performance
  4. Game day: Easily digestible carbs pre-game

In-season vs off-season:

  • In-season: Maintain weight, fuel performance
  • Off-season: Build muscle, increase strength

Combat Sports (MMA, Boxing, Wrestling)

Unique challenge: Weight cuts

Training phase:

  • Adequate calories for performance
  • Protein: 1g/lb
  • Carbs: 2-3g/lb

Weight cut (if necessary):

  • Gradual fat loss to ~5-10 lbs above weight class
  • Water/sodium manipulation last 24-48 hours
  • Don't chronically under-eat (performance and health suffer)

Post-weigh-in:

  • Rehydrate: electrolyte drinks
  • Easily digestible carbs
  • Moderate protein

Macros for Athletes

Protein for Athletes

General recommendation: 0.7-1g/lb bodyweight

By sport type:

Sport TypeProtein (g/lb)Why
Strength/Power0.8-1.0Muscle building/repair
Bodybuilding1.0-1.2Maximum muscle, minimum fat
Team sports0.7-0.9Muscle maintenance, recovery
Endurance0.6-0.8Lower needs, but still important
Combat sports0.8-1.0Muscle preservation during cuts

Protein timing for athletes:

  • Pre-training: 20-30g (1-2 hours before)
  • Post-training: 20-40g (within 2 hours)
  • Throughout day: Spread remaining evenly

Carbs for Athletes

The performance macro. Don't fear carbs if training hard.

By activity level:

Activity LevelCarbs (g/lb bodyweight)
General fitness (3-5 hrs/week)1-2g
Moderate training (5-8 hrs/week)2-3g
High volume (8-12 hrs/week)3-4g
Extreme (12+ hrs/week)4-5g+

By sport:

SportCarbsFocus
Strength sports2-3g/lbRecovery, glycogen
Bodybuilding2-4g/lb (varies by phase)Performance + appearance
CrossFit/HIIT2-4g/lbFuel high-intensity work
Endurance3-5g/lbPrimary fuel source
Team sports2-4g/lbRepeated sprint performance

Carb timing matters more for athletes:

  • Before training: Fuel the session
  • After training: Replenish glycogen
  • Between sessions <8 hours: Prioritize fast carbs

Fats for Athletes

Minimum: 0.3-0.4g/lb bodyweight

Higher fat works for:

  • Ultra-endurance (fat adaptation)
  • Low-intensity training
  • Off-season

Lower fat might be needed when:

  • Very high carb requirements
  • Total calories need to be high (carbs less filling than fat)

Pre-Workout Nutrition

Goals

  1. Top off glycogen stores
  2. Provide readily available energy
  3. Minimize GI distress

Timing and Content

3-4 hours before:

  • Full meal
  • Moderate protein (20-40g)
  • Higher carbs (50-100g)
  • Lower fat (easier to digest)

1-2 hours before:

  • Small meal/snack
  • Low protein (10-20g)
  • Moderate carbs (30-50g)
  • Very low fat

30-60 minutes before:

  • Quick carbs (15-30g)
  • Minimal protein
  • No fat
  • Examples: Banana, sports drink, energy gel

<30 minutes or fasted:

  • Nothing, or
  • Sip sports drink during warmup

Pre-Workout Examples

3-4 hours:

  • Chicken breast, rice, vegetables
  • Oatmeal with protein powder and berries
  • Turkey sandwich on whole grain bread

1-2 hours:

  • Greek yogurt with granola
  • Banana with peanut butter
  • Rice cake with honey and protein shake

30-60 min:

  • Banana
  • Sports drink
  • Energy gel
  • White bread with jam

Intra-Workout Nutrition

When Needed

Not necessary for:

  • Sessions <60 minutes
  • Low-intensity work

Beneficial for:

  • Endurance sessions >60 minutes
  • Multiple training sessions per day
  • Very high-intensity work >90 minutes

What to Consume

Carbohydrates:

  • 30-60g per hour for most
  • 60-90g per hour for ultra-endurance
  • Multiple carb sources (glucose + fructose) for high rates

Electrolytes:

  • Sodium: 500-700mg per liter
  • Potassium: 100-200mg per liter

Forms:

  • Sports drinks
  • Energy gels
  • Energy chews
  • Bananas (real food for lower intensity)

Practice in Training

Never try new nutrition on race/game day.

Test:

  • What settles well
  • What gives energy without GI distress
  • Timing and amounts

Post-Workout Nutrition

The Anabolic Window (Revised)

Old thinking: Must eat within 30 minutes

Current science:

  • Window is 2-4+ hours
  • Longer if you ate pre-workout
  • More important for multiple daily sessions

Post-Workout Goals

  1. Replenish glycogen
  2. Provide protein for muscle repair
  3. Rehydrate
  4. Reduce muscle breakdown

Post-Workout Macros

Protein: 20-40g

Carbs: Depends on sport and timing of next session

ScenarioCarbsExample
Next session >24 hours0.5-1g/lb over the dayGeneral meals
Next session 8-24 hours0.5-0.7g/lb immediateProtein shake + banana
Next session <8 hours0.7-1g/lb immediate + more throughoutSports drink + meal

Carb:Protein ratio:

  • Endurance: 3:1 or 4:1
  • Strength: 2:1 or 1:1

Post-Workout Examples

Endurance athlete (training again tomorrow):

  • Chocolate milk
  • Protein shake + 2 bananas
  • Rice bowl with chicken and vegetables

Strength athlete:

  • Protein shake + granola bar
  • Chicken and rice
  • Greek yogurt with berries and honey

Two sessions per day:

  • Immediately: Fast carbs + protein (shake + banana)
  • 2 hours later: Full meal (chicken, rice, vegetables)

Hydration for Performance

Why Hydration Matters

Performance declines at just 2% dehydration:

  • Reduced endurance
  • Decreased strength
  • Impaired decision-making
  • Increased perceived effort
  • Reduced recovery

How Much Water

Baseline:

  • Half bodyweight in ounces (e.g., 180 lbs = 90 oz)

Add for training:

  • 16-24 oz per hour of exercise
  • More in heat
  • More if high sweat rate

Sweat test:

  1. Weigh before training (naked)
  2. Train for 1 hour (no drinking)
  3. Weigh after (naked)
  4. Difference in pounds × 16 = oz of sweat per hour

Replace 100-150% of sweat losses

Electrolytes

Why they matter:

  • Sodium: Fluid balance, nerve signals
  • Potassium: Muscle contractions
  • Magnesium: Energy production

When to supplement:

  • Training >60 minutes
  • Hot conditions
  • High sweat rate
  • Cramping issues

How much sodium:

  • 500-700mg per liter of fluid
  • More if heavy sweater or hot conditions

Sources:

  • Sports drinks
  • Electrolyte tablets
  • Salt in water (¼ tsp per liter)

Hydration Strategy

Daily:

  • Sip throughout day
  • Monitor urine color (pale yellow)

Pre-training:

  • 16-20 oz 2-3 hours before
  • 8-10 oz 15 minutes before

During training:

  • 6-12 oz every 15-20 minutes
  • More in heat

Post-training:

  • 16-24 oz per pound lost

Supplements for Performance

SupplementDoseBenefitsBest For
Creatine monohydrate5g dailyStrength, power, muscle massAll athletes (except possibly endurance)
Caffeine3-6mg/kg (200-400mg)Endurance, focus, powerAll sports, timing matters
Protein powderAs neededConvenient protein sourceEveryone
Beta-alanine3-6g dailyBuffers acid, improves enduranceHIIT, CrossFit, team sports

Tier 2: Potentially Helpful

SupplementDoseBenefitsNotes
Citrulline6-8gBlood flow, enduranceTake pre-workout
Beetroot juice500mg nitrateEndurance, VO2 maxEndurance athletes
HMB3g dailyMuscle preservationDuring fat loss
Fish oil1-3g EPA+DHARecovery, inflammationIf not eating fish

Tier 3: Limited Evidence

  • BCAAs (unnecessary if adequate protein)
  • Glutamine
  • Most testosterone boosters
  • Fat burners
  • Most pre-workouts (just caffeine + marketing)

Creatine for Athletes

Most studied, most effective supplement

Benefits:

  • 5-15% strength increase
  • Faster recovery between sets
  • Increased muscle mass
  • Cognitive benefits

Dosing:

  • 5g daily (maintenance)
  • Optional: 20g/day for 5-7 days (loading)

Forms: Creatine monohydrate (cheapest, most studied)

When: Timing doesn't matter, just take daily

Note: Expect 2-5 lbs water weight gain (not fat)

Caffeine for Performance

Benefits:

  • Increased endurance (2-4%)
  • Improved power output
  • Enhanced focus
  • Reduced perceived exertion

Dosing:

  • 3-6mg per kg bodyweight
  • 180 lb person: 200-400mg

Timing: 30-60 minutes pre-training

Sources:

  • Coffee (~100mg per 8 oz)
  • Pre-workout supplements
  • Caffeine pills (precise dosing)

Tolerance: Cycle 1 week off every 6-8 weeks

Recovery Nutrition

Recovery is Performance

You don't get fitter during training. You get fitter during recovery.

Recovery Priorities

  1. Sleep: 7-9 hours (most important)
  2. Calories: Adequate total intake
  3. Protein: Consistent throughout day
  4. Carbs: Replenish glycogen
  5. Hydration: Replace fluids

Anti-Inflammatory Foods

Include regularly:

  • Fatty fish (omega-3s)
  • Berries (antioxidants)
  • Leafy greens
  • Tart cherry juice (specifically shown to help recovery)
  • Turmeric
  • Ginger

Limit:

  • Excessive processed foods
  • Trans fats
  • Excessive alcohol

NSAIDs and Recovery

Ibuprofen, aspirin, etc. may impair adaptation

Recent research suggests:

  • NSAIDs may reduce muscle protein synthesis
  • May impair long-term adaptation
  • Use sparingly, not chronically

Better for recovery:

  • Sleep
  • Nutrition
  • Active recovery
  • Massage/foam rolling

Competition Day Nutrition

Week Before

Goal: Top off glycogen without gaining fat

Carb loading (if endurance event >90 min):

  • Days 4-7 before: Moderate carbs
  • Days 1-3 before: High carbs (4-5g/lb)
  • Reduce training volume

For most sports:

  • Just eat normally
  • Don't try anything new
  • Stay hydrated

Day Before

  • Familiar foods only
  • Moderate fiber (avoid GI issues)
  • Adequate carbs
  • Well hydrated
  • Early, light dinner

Morning of Competition

Timing: 2-4 hours before

Content:

  • Familiar foods
  • Easily digestible
  • Higher carbs
  • Moderate protein
  • Low fat
  • Low fiber

Examples:

  • Toast with jam + egg whites
  • Oatmeal with banana
  • Bagel with peanut butter
  • Rice with chicken (if early enough)

Pre-Event (1 hour before)

If needed:

  • Banana
  • Sports drink
  • Energy gel
  • Sip on fluids

During Event

Follow practiced strategy:

  • <60 min: Water
  • 60-90 min: 30-60g carbs/hour
  • 90 min: 60-90g carbs/hour + electrolytes

Post-Event Recovery

Immediately:

  • Rehydrate
  • Fast carbs + protein
  • Sodium

Hours after:

  • Full meal
  • Celebrate appropriately

Common Performance Nutrition Mistakes

  1. Under-eating: Can't perform well on insufficient fuel
  2. Low carb for high-intensity training: Recipe for poor performance
  3. Ignoring hydration: Easy performance gains from proper hydration
  4. Experimenting on game day: Only use proven strategies
  5. Not practicing nutrition: Test everything in training
  6. Over-reliance on supplements: Food first, supplements fill gaps
  7. Neglecting recovery nutrition: This is when adaptation happens
  8. Copying pros: Their needs (and often drug use) don't apply to you

Key Takeaways

  1. Fuel your training: Don't under-eat if performance matters
  2. Carbs are not the enemy: High-intensity training requires carbs
  3. Protein still matters: 0.7-1g/lb for most athletes
  4. Time nutrients around training: Pre/post workout nutrition helps
  5. Hydration is critical: Practice your hydration strategy
  6. Practice everything: Never experiment on competition day
  7. Creatine and caffeine: Only supplements worth attention for most
  8. Recovery is part of performance: Sleep, food, manage stress

Match nutrition to your training demands, practice your strategies, and fuel performance.