Wumi's advice is generally pretty good... but once again, nobody needs to exercise for 90 minutes a day. That's just a little crazy.
All it takes is 30-45 minutes, 3-4x a week. A day of rest in between each session.
Don't forget a whole body workout! Weights are your friends.
Even some pilates is better than nothing. Actually, pilates is really really great. It's a wonderful toning/stretching exercise. If you're a guy, I would definitely suggest trying this out a bit, you'd be surprised how tight people can get... but get a special book for men (http://www.amazon.com/Complete-Book-Pilates-Men-Performance/... is a great one).
All it takes is 30-45 minutes, 3-4x a week. A day of rest in between each session.
Don't forget a whole body workout! Weights are your friends.
Even some pilates is better than nothing. Actually, pilates is really really great. It's a wonderful toning/stretching exercise. If you're a guy, I would definitely suggest trying this out a bit, you'd be surprised how tight people can get... but get a special book for men (http://www.amazon.com/Complete-Book-Pilates-Men-Performance/... is a great one).