This exercise will improve the tissue extensibility throughout your thigh muscles and fascia and is a great prep to do before stretching.
Start by sitting against a wall or in a chair to support your back. Roll using firm pressure to locate tender spots or tight areas throughout your thigh muscles. Massage each tender spot for 30-60 seconds. Perform for 2 minutes on each thigh. Perform for 2 minutes on each thigh. You can progress this self-massage technique by rolling your thigh muscles in the 90/90 position.
