http://AskTheTrainer.com/upper-body-stretches.html The kneeling stability ball chest stretch is a great way to lengthen the chest muscles after a chest workout or push-ups. Hold you arm in a 90 degree angle and squeeze your arms to relax the pectoralis major. If you have forward shoulders posture this muscle imbalance can be corrected by using this stretch 3 times a day for 30 seconds. If you do not know if you have muscle imbalances or not please visit... http://AskTheTrainer.com/posture-problems.html