Participants in the second group will take part in a stretching program. If you are assigned to the stretching group, you will take part in 3 sessions of stretching each week for 6 weeks. You may take part in the stretching sessions any 3 days of the week. Each stretching session will last around 60 minutes. During these stretching sessions you will be asked to do simple stretching exercises. None of the movements are difficult. You will be able to follow this program at your own pace.