You've gotten a lot of good answers, but I just wanted to point out that if you don't find working out daily sustainable, then it is ok to work-out less! When I first started, I was working out 5-6 days a week. I was able to keep this up for a few months, but can no longer deal with it! I've gone to 2-3 structured work outs a week and usually fit in push-ups, squats that take just a few minutes that I don't really count as working out on some off days. My sister couldn't keep up working out daily, so she just simply stopped completely
So I guess I'm saying be aware it doesn't have to be all or nothing. Consistency and keeping going is (in my humble opinion) more important than how many days a week you work out in the long run. Obviously there are lots of people who can work out daily for years on end, but I think most people simply can't, and 2-3 times a week is still fantastic!
