Before you begin your exercise for today make sure that you warm up on the treadmill or the bike for about five minutes. You must not move into heavy exercise until you have given your body a little bit of preparation. Now after you have warmed up for five minutes, proceed by doing some light stretching exercises. The ones form high school gym class will be just fine. You want to make sure that your muscles are warm and pliable before you begin your stretching. Now you are ready to begin your workout.