It depends what your goals are and what kind of shape you're in to begin with, but rest is important. If you've been working out for a while, the generally acce

It depends what your goals are and what kind of shape you're in to begin with, but rest is important. If you've been working out for a while, the generally accepted wisdom is that you should have 1-2 rest days each week, though in my experience you can maintain pretty well and even see gains with just a couple of workouts a week.