cardio

[Kingweb50]

how many minutes can you do cardio for untill it becomes catabolic I have heard as little as 20minutes and as much as 1 hour does anybody know for sure?

[AandF6969]

I usually try to keep it under 45 minutes. You're going to hear a ton of different opinions on this, it depends on what kind of glycogen stores you have in your muscles, your diet, your weight, fitness level, all kinds of things.