Ive heard both ways about cardio, some say do it before and some say do it after. If you're doing it to burn fat, i say do it after because glucogen would be low or gone leaving the next source of energy to be fat. I havent heard a good reason to why you would want to do cardio before your workout so I was wanting to know if there even was a good reason. Wouldn't doing cardio before a workout be bad because glycogen would be gone and while working out the body would have to break down protein for energy since lifting is an anerobic activity? What's the reasons for doing one way or the other?