Does Aerobic Exercise Burn Muscle?

Aerobic exercises does not burn muscles untill unless you are having proper diet. Your diet should be balanced and planned according to your exercises plan. Often people who are on weightloss program do high intensity aerobic exercises and take insufficient diet, under such condition energy cost to carry aerobic exercise comes from muscle. To prevent this your exercise plan should consist of strengthning exercises which will maintain your muscle mass.

Well said Lifemojo expert. I completely agree with you. To the best of my knowledge aerobic exercises doesn't burn muscles until unless you are undernourished. Some studies suggest excessive aerobic exercises or over training can lead to increased production of catabolic hormones like cortisol, which can subsequently cause breakdown of muscle tissue. But excessive resistance training also lead to increased production of cortisol, but there is no muscle breakdown seen. Thus there is no clear evidence to support that aerobic exercises burn muscles but make sure your diet is proper to support your workout.