Lie on your back with your knees bent, your feet flat on the floor or a mat, and arms at your sides. Raise your knees, either one at a tie or together, to your chest. You can use your arms to help pull your knees to this position. Use your arms to gently pull your knee(s) to your chest. Hold for 5 seconds. Lower your legs one at a time to the floor and rest briefly. Do 5 repetitions.