It really doesn't matter when you workout as long as you do it. The benifits of working out in the morning are faster metabolism throughout the day as opposed to execrsising at night then going to sleep a few hours later at which time you slow down. Another added benifit to working out in the morning is mental, people usually get tired and exhaushted as the day goes on so it may start to become a battle with yourself,also the hassles of life catch up which eats away at your time. The good part mentaly about working out in the morning is that it's already done! You feel so good about yourself and to me that is what fitness is about! have a good workout