i just joined a gym friday, and tomorrow I will be going for the first time, and i know nothing about working out or weight training. i need some advice for stretching, cardio, and lifting. im 23, 5'10 180 and have a little gut. i would like to lose the gut, and just tone up, im not looking to bulk up too much. i have about an hour a day i can spend in the gym and i have read that a short workout, about 3 days a week is all one needs...if true please give some more info?? thank you