Starting Position: Begin in a tall kneeling position with your lower legs stabilized by a person or furniture. Movement: While keeping your core and gluteal muscles engaged, slowly tilt your body forward from your knees. Be sure to keep your body completely straight. Move only a small range of motion initially to test your limits; this is a very challenging and demanding exercise on your hamstrings. You will feel a strain along the back of your upper leg. Repeat as prescribed. Tip: Be sure not to bend forward at your hips.