How do boxers keep their muscle mass even though they condition for miles and mi!
Question: i'm guessing it's because of the amount of calories they take in every day. The probably take in close to like 4500 calories a day because they work so hard. Their bodies just don't burn enough of it to start burning off muscle.
Answers: i'm guessing it's because of the amount of calories they take in every day. The probably take in close to like 4500 calories a day because they work so hard. Their bodies just don't burn enough of it to start burning off muscle.