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For the most part, I agree. We aren't all super skinny. Since Jan 1, I’m down about 20 pounds with another 10-15 to go. But endurance athletes are quite different to just “regular” athletes.

Someone who does a < 60 minute workout will likely not burn off all the glycogen stored in their muscles. Around 60 minutes your body will have to switch to burning fat or you start having to add calories. And “eating healthy” during exercise takes a backseat to fast calories due to GI issues and the much slower breakdown of more complex carbohydrates.

The difference is what you eat when you’re not training. I try to eat healthy during the day, but for long workouts, it’s high-carb sports drinks, gels, and peanut butter M&Ms.

Gustav Iden, the current IRONMAN champion, eats around 8000 calories on intense training days.

https://youtu.be/GrzDoSwg198

I’m not Gustav, and I don’t work out as much or as hard as he does, but sometimes I need 3000-4000 calories just so I don’t feel like * before, during or after training



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