Transcription: Tighten your abdominals. Flatten your lower back. Extend your right foot forward, planting your heel and keeping the toes up. Place both hands on the left knee. Be sure to keep the eyes and head up. Keeping your weight on your left foot, bend at the waist so that your back and front leg form a 90 degree angle. Keeping your hips and shoulders squared forward, hold this position for 10 to 30 seconds, then relax and return to the starting position. Repeat this stretch for the opposite side of the body.