Summary
Highlights
To find your max heart rate, subtract your age from 220. The fat burning zone is specifically within Zone 2 to Zone 3, which corresponds to 50-70% of your maximum heart rate. Monitoring your heart rate during exercise, regardless of the cardio modality, is crucial to stay within this optimal zone.
The video introduces the best form of cardio for fat burning, emphasizing doing it correctly to avoid wasted effort from less effective methods like burpees or endless treadmill running. It promises to reveal how long and how often to do cardio for optimal fat loss.
The concept of the 'fat burning zone' is introduced as a specific heart rate range that optimizes fat burning during cardio. It explains the five heart rate zones, stating that Zone 1 is 40-50% of max heart rate, Zones 2 and 3 are 50-70%, and Zones 4 and 5 are 70-90%+ of max heart rate.
While the fat burning zone uses fat for energy during the workout, it doesn't automatically mean burning stored body fat. The video emphasizes that sustained fat loss requires an overall calorie deficit. You cannot 'outrun a bad diet,' as consuming too many calories will still lead to fat gain, even if you're in the fat burning zone during exercise.
The video compares low and high-intensity cardio. While high-intensity cardio burns more calories in the short term, it primarily uses carbs for energy, depleting glycogen stores. This depletion triggers increased hunger and cravings, especially for sugary foods, making it harder to maintain a calorie deficit. High-intensity cardio can also raise cortisol levels, further increasing hunger and cravings.
Low-intensity cardio, by burning fat instead of carbohydrates, does not significantly increase hunger, cravings, or stress levels. This makes it easier to stick to a calorie deficit and achieve consistent fat loss progress compared to high-intensity training. Thus, Zone 2 to Zone 3 cardio is recommended as the best for burning fat and losing stored body fat.
A recommended weekly cardio routine includes 1-4 sessions per week, lasting 15-45 minutes (with 30 minutes being sufficient for most). It's advised to perform cardio after a weightlifting workout or on a rest day, never before weightlifting, to avoid depleting energy, decreasing performance, and increasing injury risk. Combining this approach with a calorie deficit will lead to the most efficient fat burning.