Performance Nutrition
Nutrition for athletes and active people.
Performance Nutrition Principles
Fuel performance, optimize recovery, support adaptation.
Unlike general fitness nutrition, performance nutrition prioritizes:
- Training quality over appearance
- Recovery between sessions
- Adaptation to training stress
- Competition performance
Energy Systems
Understanding how your body produces energy during different activities:
| System | Duration | Intensity | Fuel | Examples |
|---|---|---|---|---|
| Phosphagen (ATP-PC) | 0-10 sec | Maximal | Creatine phosphate | Sprints, heavy lifts |
| Glycolytic (Anaerobic) | 10 sec - 2 min | Very high | Glucose/glycogen | 400m run, HIIT |
| Oxidative (Aerobic) | 2+ min | Low-moderate | Carbs + fats | Distance running, cycling |
Implication: Different sports need different nutritional strategies.
Sport-Specific Nutrition
Strength Sports (Powerlifting, Olympic Lifting)
Energy system: Primarily phosphagen
Nutritional priorities:
- Adequate calories: Support strength gains
- Protein: 0.8-1g/lb bodyweight
- Carbs: 2-3g/lb for energy and recovery
- 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:
- Periodization: Bulk and cut phases
- Protein: 1g/lb bodyweight (minimum)
- Carbs: Higher during bulk (2-3g/lb), lower during cut
- 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:
- Carbs: 2-4g/lb (high training volume)
- Protein: 0.8-1g/lb
- Hydration: Critical with high sweat rates
- 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:
- Carbs: 3-5g/lb (up to 7g/lb for ultra-endurance)
- Protein: 0.6-0.8g/lb (lower than strength sports)
- Fat: 0.4-0.5g/lb (energy source at lower intensities)
- 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:
- Carbs: 2-4g/lb for glycogen
- Protein: 0.8-1g/lb
- Hydration: Critical for performance
- 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 Type | Protein (g/lb) | Why |
|---|---|---|
| Strength/Power | 0.8-1.0 | Muscle building/repair |
| Bodybuilding | 1.0-1.2 | Maximum muscle, minimum fat |
| Team sports | 0.7-0.9 | Muscle maintenance, recovery |
| Endurance | 0.6-0.8 | Lower needs, but still important |
| Combat sports | 0.8-1.0 | Muscle 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 Level | Carbs (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:
| Sport | Carbs | Focus |
|---|---|---|
| Strength sports | 2-3g/lb | Recovery, glycogen |
| Bodybuilding | 2-4g/lb (varies by phase) | Performance + appearance |
| CrossFit/HIIT | 2-4g/lb | Fuel high-intensity work |
| Endurance | 3-5g/lb | Primary fuel source |
| Team sports | 2-4g/lb | Repeated 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
- Top off glycogen stores
- Provide readily available energy
- 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
- Replenish glycogen
- Provide protein for muscle repair
- Rehydrate
- Reduce muscle breakdown
Post-Workout Macros
Protein: 20-40g
Carbs: Depends on sport and timing of next session
| Scenario | Carbs | Example |
|---|---|---|
| Next session >24 hours | 0.5-1g/lb over the day | General meals |
| Next session 8-24 hours | 0.5-0.7g/lb immediate | Protein shake + banana |
| Next session <8 hours | 0.7-1g/lb immediate + more throughout | Sports 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:
- Weigh before training (naked)
- Train for 1 hour (no drinking)
- Weigh after (naked)
- 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
Tier 1: Proven and Recommended
| Supplement | Dose | Benefits | Best For |
|---|---|---|---|
| Creatine monohydrate | 5g daily | Strength, power, muscle mass | All athletes (except possibly endurance) |
| Caffeine | 3-6mg/kg (200-400mg) | Endurance, focus, power | All sports, timing matters |
| Protein powder | As needed | Convenient protein source | Everyone |
| Beta-alanine | 3-6g daily | Buffers acid, improves endurance | HIIT, CrossFit, team sports |
Tier 2: Potentially Helpful
| Supplement | Dose | Benefits | Notes |
|---|---|---|---|
| Citrulline | 6-8g | Blood flow, endurance | Take pre-workout |
| Beetroot juice | 500mg nitrate | Endurance, VO2 max | Endurance athletes |
| HMB | 3g daily | Muscle preservation | During fat loss |
| Fish oil | 1-3g EPA+DHA | Recovery, inflammation | If 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
- Sleep: 7-9 hours (most important)
- Calories: Adequate total intake
- Protein: Consistent throughout day
- Carbs: Replenish glycogen
- 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
- Under-eating: Can't perform well on insufficient fuel
- Low carb for high-intensity training: Recipe for poor performance
- Ignoring hydration: Easy performance gains from proper hydration
- Experimenting on game day: Only use proven strategies
- Not practicing nutrition: Test everything in training
- Over-reliance on supplements: Food first, supplements fill gaps
- Neglecting recovery nutrition: This is when adaptation happens
- Copying pros: Their needs (and often drug use) don't apply to you
Key Takeaways
- Fuel your training: Don't under-eat if performance matters
- Carbs are not the enemy: High-intensity training requires carbs
- Protein still matters: 0.7-1g/lb for most athletes
- Time nutrients around training: Pre/post workout nutrition helps
- Hydration is critical: Practice your hydration strategy
- Practice everything: Never experiment on competition day
- Creatine and caffeine: Only supplements worth attention for most
- Recovery is part of performance: Sleep, food, manage stress
Match nutrition to your training demands, practice your strategies, and fuel performance.