Your hip flexors and psoas muscles help drive your legs up when you are running. To stretch these muscles, kneel on the floor and then step out forward with your left leg so that your left foot is on the floor. With your back straight, lean forward so that your weight is on the front foot and you feel a stretch in the hip of the back leg. Perform the stretch on both sides.
• Scoliosis. Instead of running straight up the center of the back, a spine with scoliosis twists to one side. Scoliosis can be classified as true (meaning it has to do with abnormal development of the spine) or functional (meaning its cause is not directly related to the spine). Functional scoliosis may occur when a discrepancy in leg length causes the pelvis to tilt to one side to compensate. The cause of true scoliosis is largely unknown, although doctors suspect that it may be the result of imbalanced growth in childhood.
This pose is one of the most comfy ones for the lower back and hips. It will also stretch your neck, shoulders, and chest. Lie on your back and hug your knees into your chest. Breathe in deeply, and then exhale completely, lowering both legs to the floor on your left (keep your knees higher than your hips). Position your arms out to your sides, or place your left forearm on your right thigh (as pictured) to encourage a deep stretch, relaxing both shoulders to the floor. Shift your gaze over your right shoulder. Close your eyes, take 10 deep breaths, and then release. Repeat to your other side.
Grade II (moderate): A larger tear in your muscle that makes it difficult to move and causes a moderate amount of pain, especially when you move the affected muscle, swelling, and tenderness. You may have 5 percent to 50 percent loss of function and you may be limping. You can't go back to sporting activities until the tear is completely healed. These injuries can take anywhere from a couple weeks to a few months to heal, depending on how bad they are.