Yoga is also a kind of exercise, and it certainly has many benefits. You can practice at home. Buy a CD, a yoga mat, a yoga suit, and just do it. It is important that there is no one at home. If someone bothers you and you are distracted, it is difficult to do it well. You should stick to it, even if it is good twice a week. You just start to do some relatively simple actions, and it will become more and more difficult gradually. At home, the advantage is that you are more free and more difficult.