Should you fuel up before hitting the weights? Sports nutrition experts weigh in on the benefits and drawbacks of lifting fasted or fed.
The Great Debate: Fasted vs Fed
The weight room is a battleground for endless debates, from the best supplements to the perfect rep range. But today, we're tackling a crucial question: Should you eat before lifting weights, or is it better to go in on an empty stomach?
While fasted cardio has its supposed advantages, the question remains: Does the same apply to strength training? Or is a pre-workout snack the key to maximizing your gains?
Let's dive into the pros and cons of lifting fasted or fed, and discover the best pre-workout eats to enhance your training session without causing digestive distress.
Meet the Experts
- Jason Machowsky, RD, CSCS: Exercise Physiologist and Board-Certified Sports Dietitian
- Laura Kunces, Ph.D., RD, CSSD: Sports Dietician, Clinical Researcher, and Vice President of Medical Strategy at Thorne
- Mallory Aldred, RD: Registered Dietitian and Founder of What Mallory Eats
So, do you need to eat before lifting?
The Case for Eating Before Lifting
According to Jason Machowsky, it's best not to go into a strength workout hungry or depleted. Having some food in your system provides the energy needed for an intense session and initiates the muscle repair process post-workout.
Laura Kunces adds that the need to eat before strength training depends on your goals and the intensity, duration, and volume of the session. Some individuals, like early morning exercisers, those with sensitive stomachs, or those aiming to cut fat, may benefit from lifting in a fasted state.
The Benefits of Eating Before Lifting
- Access to more energy to power through lifts
- Increased mental focus for better form
- Reduced risk of muscle breakdown
When and What to Eat Before Strength Training
Timing and food choice are crucial. Eating a large meal right before a workout can hinder performance and cause discomfort.
When you lift, your body directs blood, carrying oxygen and nutrients, to the working muscles. However, digestion also requires blood flow to the stomach, which can lead to competition for blood supply and potential GI distress, explains Kunces.
Machowsky recommends eating a meal within the last 3-4 hours or having a pre-workout snack within the last hour.
Registered Dietitian Mallory Aldred emphasizes the importance of including carbs (for energy) and protein (for muscle support and recovery) in each meal or snack.
For a pre-workout snack, aim for around 15-25 grams of protein and carbs each, totaling around 200 calories. Here are some snack ideas:
- 5-8 ounces of Greek yogurt with cereal or granola
- Two hard-boiled eggs and a piece of fruit
- Half an egg or tofu sandwich on toast
- String cheese with a handful of crackers
- One scoop of tuna with a rice cake
If you're an early morning exerciser and struggle with food intake, Aldred suggests sipping on an essential amino acid supplement mixed with water during your workout to prevent muscle loss.
Hydration Matters
Proper hydration is key to overall performance, says Machowsky. Morning lifters should drink water on their way to the gym, while afternoon lifters should ensure fluid intake throughout the day, aiming for half their body weight in fluid ounces.
Does it Depend on Your Goals?
Absolutely. If your primary goal is to lose body fat, you may opt for a fasted approach. Research suggests that fasting during lower-intensity, lower-volume lifts can increase the percentage of energy derived from fat, potentially resulting in greater fat loss.
However, there's a risk that your body may also break down muscle for fuel, which is not ideal for fat or weight loss. To minimize muscle breakdown, Machowsky recommends prioritizing protein with breakfast immediately after a fasted workout.
For individuals who strength train, the American College of Sports Medicine recommends 0.5 to 0.8 grams of protein per pound of goal body weight.
Final Thoughts
The decision to eat before lifting depends on various factors, including your goals, workout intensity, and personal preferences. While some may benefit from a fasted approach, most individuals will likely perform better and recover more effectively with a pre-workout snack.
What's your take on this debate? Do you prefer lifting fasted or fed? Share your thoughts and experiences in the comments!
