Summary
Dr. Andy Galpin explains how to boost metabolism and burn fat effectively. Covers the science of metabolic rate, exercise approaches, and practical strategies for body composition.
Key Points
- Understanding metabolic rate factors
- Exercise strategies for fat burning
- Building muscle to boost metabolism
- Nutrition timing for fat loss
- Zone 2 training and fat oxidation
- Avoiding metabolic adaptation
Key Moments
Cardio burns more calories per session than lifting -- Galpin tested it in the lab
Pick the modality with highest sustainable effort and lowest injury risk. Endurance exercise almost always burns more calories than strength training -- Galpin tested every lifting style in the lab and never came close to matching cardio output.
"We directly went into the lab and tested this. We never got close burning the calories lifting, no matter what style of lifting we did."
Lifting preserves muscle during fat loss and keeps weight off longer than cardio alone
Despite burning fewer calories per session, lifting weights during a fat loss phase preserves muscle mass, which maintains resting metabolic rate. People who include lifting are more successful at keeping weight off long-term. HIIT adds a post-exercise calorie burn that steady-state cardio lacks.
"People that lift weights as a part of their fat loss strategy are oftentimes more successful in the short and long term, meaning they keep the weight off longer."
Strength training's real metabolic win: preventing RMR from dropping, not boosting it
Strength training preserves resting metabolic rate rather than meaningfully boosting it. Each pound of muscle adds only 50-60 kcal/day, not the often-claimed higher numbers. But when people reduce training, RMR drops 10%+, so the real value is in preventing that decline.
"It doesn't have the biggest win in terms of caloric expenditure, but it does have the biggest win in terms of chronic maintenance of your resting metabolic rate."
Fat loss math: combine 200 cal from exercise + 25 cal from metabolic boosters + NEAT
RMR boosts from lifting alone are modest -- maybe 50-60 kcal/day from added muscle. Any meaningful boost likely comes from increased total muscle mass. Combined approaches work best: 200 extra calories from exercise, 25 from fish oil and green tea, plus increased NEAT.
"RMR, it may stop it from going down. If it does boost it, it's probably because it yielded an increase in total muscle mass."
Extreme calorie restriction drops RMR and costs muscle -- use all 4 levers instead
Slashing calories too aggressively is often unsustainable and drops resting metabolic rate while causing muscle loss. You have four levers to pull -- thermic effect of food, exercise, NEAT, and RMR support. Use a combination rather than going all-in on one.
"You have four ways to manipulate this. You have thermal effect, you have exercise, you have NEAT, and you have a bunch of ways to alter resting metabolic rate."
