What happens next in this paragraph?

How to do a jack knife sit up
Lie flat on the floor with your arms and legs extended.
Your arms should be lifted so that they're above your head. Make sure your spine is in a neutral position so your lower back isn't arched or rounded.
OPTIONS: 1. Twist your upper body slightly to the right. With this turn, you're on your knees instead of face up, but still tilted slightly downwards.; 2. If you'll be exercising on a hard floor, lay down an exercise mat before you begin. Take a deep breath before you begin.; 3. Allow your knees to extend behind you, over the center of your back, and allow them to drop below your ribcage. Refrain from dropping the weights too much or the corners of your back may collapse.; 4. Flip your upper body over using a leg extended behind you on the opposite side of your body. Your knees should be bent and the lower back should be hanging off of the floor.;
2.