Multi-select problem: How does the next paragraph end?

How to quickly boost your energy with yoga
Get into position.
Sit or stand with your back straight and your hands at your sides to do basic deep breathing. If you're sitting in a chair, keep your back away from the back of the chair.

Options are: (I). If you're standing (push up) in a room with only enough light to get a sense of everything around you, this is your starting point. Deep-breathing is an ancient chinese practice.; (II). If you're standing, sit against a wall. Make sure you're pressed up against a wall so your shoulders and upper back (where your neck would be if you were sitting) are aligned directly below your shoulders.; (III). If you're standing in a wall or a step stool, sit on the edge of the chair with your legs curled forward. Your shoulders, arms, and hands should be vertical.; (IV). You should feel comfortable and able to relax. Double breathing is the basis of many of the energizing exercises because it increases the oxygen in your blood.;
(IV).