What Should I Eat Before a Workout?
What Should I Eat Before a Workout?
By Barbara Lewin, RDN, LDN Sports and Functional Nutritionist
What you eat before a workout can have a noticeable impact on energy, performance, digestion, and even how you feel afterward. Many people assume there is one “perfect” pre-workout meal, but in reality, the best choice depends on your training intensity, timing, and how your body responds to food.
From a sports and functional nutrition perspective, pre-workout fueling is not just about calories-it’s about supporting stable blood sugar, reducing gastrointestinal stress, and ensuring your muscles have usable energy when you need it most.
Why Pre-Workout Nutrition Matters
Before exercise, your body relies primarily on stored carbohydrates (glycogen) and circulating blood glucose for fuel. If those levels are too low-or if the meal is poorly timed or poorly balanced—you may experience:
- Early fatigue during training
- Poor focus or reduced intensity
- Digestive discomfort or bloating
- Slower recovery afterward
On the other hand, the right pre-workout approach can help stabilize energy, improve endurance, and support better overall performance.
The Key Principles of a Good Pre-Workout Meal
There is no one-size-fits-all meal, but effective pre-workout nutrition usually follows a few core principles:
- Carbohydrates provide primary fuel for most training sessions
- Protein supports muscle availability and recovery
- Fat and fiber should be adjusted based on timing and tolerance
- Timing matters just as much as food choice
A lighter, faster-digesting meal is typically better closer to training, while a more balanced meal can be tolerated if eaten 2–3 hours before exercise.
What to Eat (Based on Timing)
2-3 Hours Before Training
A balanced meal that includes protein, carbohydrates, and moderate fat is usually well tolerated.
Examples:
- Salmon or chicken with rice and cooked vegetables
- Oatmeal with protein powder and berries
- Eggs with toast and fruit
30-90 Minutes Before Training
Focus more on easily digestible carbohydrates with a small amount of protein.
Examples:
- Banana with a small protein shake
- Rice cakes with nut butter (light amount)
- Yogurt with fruit (if tolerated)
Right Before Training (if needed)
If you train early or need quick energy:
- A piece of fruit
- Small sports drink or simple carbohydrate source
- Half a protein shake
Common Mistakes That Affect Performance
Many people unknowingly reduce their workout quality by:
- Eating too much fat or fiber right before training
- Skipping food completely and training under-fueled
- Relying on highly processed or sugary options that cause energy crashes
- Not adjusting intake based on workout intensity
Your pre-workout nutrition should match your session—not just your habits.
Functional Nutrition Perspective
From a functional nutrition standpoint, pre-workout fueling also connects to broader patterns such as:
- Blood sugar regulation and insulin sensitivity
- Digestive function and food tolerance
- Stress and cortisol response
- Recovery capacity and inflammation levels
This is why two people doing the same workout may need completely different nutrition strategies.
What I Typically Evaluate
- Current training schedule and intensity
- Pre- and post-workout eating patterns
- Blood sugar stability and energy fluctuations
- Digestive tolerance to different food types
What the First Visit May Include
- Review of your training and nutrition routine
- Identification of energy or recovery gaps
- Personalized pre- and post-workout fueling strategy
- Practical meal and snack recommendations based on your goals
Who This Approach May Be Appropriate For
- Athletes and active individuals struggling with low energy during workouts
- People experiencing digestive issues around exercise
- Those trying to improve performance, recovery, or body composition
- Anyone unsure what or when to eat around training
If you want a more individualized approach, I help clients move beyond generic nutrition advice and build fueling strategies based on their training load, digestion, and performance goals. Small adjustments in timing and food choice can often make a noticeable difference in energy, recovery, and consistency in training. (Click here to get started)