• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
Breaking Muscle

Breaking Muscle

Breaking Muscle

  • Fitness
  • Workouts
    • Best Shoulder Workouts
    • Best Chest Workouts
    • Best Leg Workouts
    • Best Leg Exercises
    • Best Biceps Exercises
    • Best Kettlebell Exercises
    • Best Back Workouts
    • Best HIIT Workouts
    • Best Triceps Exercises
    • Best Arm Workouts
  • Reviews
    • Supplements
      • Best Pre-Workout
      • Best BCAAs
      • Best Testosterone Boosters
      • Best Bodybuilding Supplements
      • Best Creatine
      • Best Supplements for Weight Loss
      • Best Multivitamins
      • Best Collagen Supplement
      • Best Probiotic
      • Best Non-Stim Pre-Workout
      • Best Greens Powder
      • Best Magnesium Supplements
    • Protein
      • Best Protein Powder
      • Best Whey Protein
      • Best Protein Powders for Muscle Gain
      • Best Tasting Protein Powder
      • Best Vegan Protein
      • Best Mass Gainer
      • Best Protein Shakes
      • Best Organic Protein Powder
      • Best Pea Protein Powder
      • Best Protein Bars
    • Strength Equipment
      • Best Home Gym Equipment
      • Best Squat Racks
      • Best Barbells
      • Best Weightlifting Belts
      • Best Weight Benches
      • Best Functional Trainers
      • Best Dumbbells
      • Best Adjustable Dumbbells
      • Best Kettlebells
      • Best Resistance Bands
      • Best Trap Bars
    • Cardio Equipment
      • Best Cardio Machines
      • Best Rowing Machines
      • Best Treadmills
      • Best Weighted Vests
      • Concept2 RowErg Review
      • Hydrow Wave Review
      • Best Jump Ropes
  • News
  • Exercise Guides
    • Legs
      • Back Squat
      • Bulgarian Split Squat
      • Goblet Squat
      • Zercher Squat
      • Standing Calf Raise
      • Hack Squat
    • Chest
      • Bench Press
      • Dumbbell Bench Press
      • Close-Grip Bench Press
      • Incline Bench Press
    • Shoulders
      • Overhead Dumbbell Press
      • Lateral Raise
    • Arms
      • Chin-Up
      • Weighted Pull-Up
      • Triceps Pushdown
    • Back
      • Deadlift
      • Trap Bar Deadlift
      • Lat Pulldown
      • Inverted Row
      • Bent-Over Barbell Row
      • Single-Arm Dumbbell Row
      • Pendlay Row
Fitness

Should You Eat Before Training?

So which is it? Should you eat before training? If so, how much, and how close to working out?

Written by Andy Peloquin Last updated on Nov 22, 2021

Ask ten trainers about pre-workout nutrition, and you’ll get ten different answers. Some trainers insist that it’s better to train in a fasted state (first thing in the morning, no breakfast). Others believe that a carb-heavy meal before a workout is the way to go, while others swear by a fat-rich or protein-rich snack. So which is it? Should you eat before training? If so, how much, and how close to working out?

If there’s one thing all trainers can agree on, it’s that eating too close to your workout is bad. Your body only has so much blood, and if your stomach is using all the blood (for digestion) there won’t be enough for your muscles. Eating less than 60-90 minutes before your workout is all but guaranteed to cause stomach aches and reduce performance.

A study from the American Journal of Physiology: Endocrinology and Metabolism have found an answer about whether or not to eat before a workout. British researchers had overweight men walk for 60 minutes (at 60% VO2 Max) both in a fasted state and 120 minutes after a carb-heavy breakfast.

Gene expression in the adipose tissue differed significantly in the two trials. The expression of two genes, PDK4 and HSL, increased when the men fasted and exercised and decreased when they ate before exercising. The rise in PDK4 likely indicates that stored fat was used to fuel metabolism during exercise instead of carbohydrates from the recent meal. HSL typically increases when adipose tissue uses stored energy to support increased activity, such as during exercise, explained Dylan Thompson, corresponding author of the study.

These results reinforce the view that “adipose tissue often faces competing challenges,” Thompson wrote. After eating, adipose tissue “is busy responding to the meal and a bout of exercise at this time will not stimulate the same [beneficial] changes in adipose tissue. This means that exercise in a fasted state might provoke more favorable changes in adipose tissue, and this could be beneficial for health in the long term,” he noted.

Feeding Influences Adipose Tissue Responses to Exercise in Overweight Men

Let’s break it down: if you eat before working out, your adipose tissue is preparing to store the calories and fat from the meal. The workout won’t stimulate the beneficial changes in adipose tissue (a decrease in stored fat) you want.

If your goal is to burn fat, you’re better off working out in a fasted state. Eating before your workout will only stop your body from activating the stored fat for energy. You’re better off having your meals after your training session, or at least eating 3-6 hours before you hit the gym so you’ve fully digested your meal and ready to burn fat.

Reference:

1.Chen, Yung-Chih, Rebecca L. Travers, Jean-Philippe Walhin, Javier T. Gonzalez, Francoise Koumanov, James A. Betts, and Dylan Thompson. “Feeding Influences Adipose Tissue Responses to Exercise in Overweight Men.” American Journal of Physiology – Endocrinology and Metabolism, March 14, 2017, ajpendo.00006.2017. doi:10.1152/ajpendo.00006.2017.

Andy Peloquin

About Andy Peloquin

Sports and exercise have always been a huge part of my life. I played my first basketball game at age 6, and have tried just about every sport on the planet -- save golf and croquet. Being a large, hefty lad (currently standing at 6' 6" and weighing 275 lbs), I am passionate about weights, cycling, running, sprint training, and practicing martial arts. I'm currently a green belt in Karate, Taekwondo, Hapkido, and kickboxing, and work hard to take my skills to the next level. Fitness and health are my passion, and I love writing and sharing what I know. I am a certified Professional Trainer and always looking for ways help others meet their health and fitness goals.

View All Articles

Related Posts

Fergus Crawley 5K Run Tips Photo
Fergus Crawley Shares 5 Tips For Running a Better 5K
Actor Chris Hemsworth in gym performing dumbbell row
Chris Hemsworth Diagrams a Killer Upper Body Workout Fit For an Action Star
Hugh Jackman Deadpool 3 Workouts Spring:Winter 2023
Hugh Jackman Returns to Wolverine Condition in Workouts for “Deadpool 3”
Method Man Incline Dumbbell Presses December 2022
Check Out Rapper Method Man Cruising Through 120-Pound Incline Dumbbell Presses for 10 Reps

Primary Sidebar

Latest Articles

New Year’s Fitness Sales (2025)

XWERKS Motion BCAA Review (2025): A Registered Dietitian’s Honest Thoughts

Assault Fitness AssaultBike Pro X Review (2025): Assault’s Best Bike Yet?

13 Best Exercise Bikes for Home Gyms (2025)

Transparent Labs BCAA Glutamine Review (2025): The Key to Post-Workout Recovery?

Latest Reviews

Element 26 Hybrid Leather Weightlifting Belt

Element 26 Hybrid Leather Weightlifting Belt Review (2025)

Omre NMN + Resveratrol, Lifeforce Peak NMN, and partiQlar NMN on a red background

Best NMN Supplement: Fountain of Youth in a Bottle? (2025)

The Titan Series Adjustable Bench on a red background

Titan Series Adjustable Bench Review (2025)

A photo of the NordicTrack Select-a-Weight Dumbbells on a red background

NordicTrack Adjustable Dumbbell Review (2025): Are These Value Dumbbells Worth It?

woman lifting barbell

Be the smartest person in your gym

The Breaking Muscle newsletter is everything you need to know about strength in a 3 minute read.

I WANT IN!

Breaking Muscle is the fitness world’s preeminent destination for timely, high-quality information on exercise, fitness, health, and nutrition. Our audience encompasses the entire spectrum of the fitness community: consumers, aficionados, fitness professionals, and business owners. We seek to inform, educate and advocate for this community.

  • Reviews
  • Healthy Eating
  • Workouts
  • Fitness
  • News

Follow Us

  • Facebook
  • Twitter
  • Instagram
  • Pinterest
  • RSS Feed

© 2025 · Breaking Muscle · Terms of Use · Privacy Policy · Affiliate Disclaimer · Accessibility · About