Corrective stretching and/or strengthening exercises are active therapies essential for proper recovery of an injury and maintenance of proper biomechanics. Therapeutic exercises in conjunction with chiropractic adjustments  can lead to quicker recovery times and with better biomechanical movement patterns and fewer muscle compensations associated with improper movement patterns. The number of exercises/stretches and amount of time you will need to spend doing them is entirely dependent on the type of condition and the severity of your condition.