19. Lunges with half side bend
Stand upright, feet hip-width apart, toes pointing straight forward. Extend your arms as if you are about to jump into a pool and do a big lunge backward with your right leg.
Sit your toes on the floor, bend your left knee and let your hips drop until your right knee almost touches the floor.
In the down position, the knee of your front foot should be directly over your ankle.
Step back far enough to reach this position. Now lunge your left leg backward and bring your right arm to the floor.