you can live an active lifestyle and do something everyday first off
in terms of weight training you do not want to work certain parts of the body too often. if you over train shoulders for example you will run the risk of tearing a rotator cuff, if you over train arms you run the risk of developing wrist and elbow tendonitis. treat your body with respect
the young guys reading this can get away with a lot more, but it will come back to bite you as you age. why do NFL RB's rarely make it past 30? there is a reason for that. don't pound yourself into the ground in your 20's.. train SMART