1. Lie face down on the ground, toes pointed, ankles touching the ground, arms extended forward, like Superman in flight, palms down, touching the ground.

2. Pull one arm and the opposite leg off the ground by engaging your glutes, shoulders, core, and back. They should rise up 2-3 inches.

3. Ensure that your arms are also fully contracted.

4. Hold this position for 1-2 seconds.

5. Slowly lower your arm and leg back to the starting position. Repeat, using the other arm and opposite leg.

1. Find a sturdy doorway that has a flat, wide doorframe.

2. Stand facing the doorway and hold onto the sides of the doorframe at chest height.

3. Lean back as far as you safely can while holding yourself stable, keeping your body in one straight line and your heels planted on the ground.

4. Engage your back muscles to pull your body back towards the doorframe, squeezing your shoulder blades and lats together.

5. Pause briefly at the top of the movement and then slowly lower yourself back to the starting position.

1. Grab a towel or t-shirt, hold it in both hands, and stand with knees slightly bent or in squat position.

2. Hold the towel out in front of your chest with your arms extended, and pull on both sides of the t-shirt or towel as hard as you can, as if you were trying to rip it.

3. As you continue to try to rip the towel or t-shirt, slowly bend your elbows and bring the towel toward your chest, as if you were doing a barbell press. This is one rep.

4. Repeat as prescribed.

1. Stand with your feet shoulder-width apart and your hands behind your head or crossed in front of your chest.

2. Engage your core and hinge at the hips, keeping your back straight and your knees slightly bent.

3. Lower your torso towards the ground, keeping your head and neck neutral.

4. Pause at the bottom of the movement and then return to the starting position by squeezing your glutes and pushing your hips forward.

5. Repeat for the desired number of reps.

1. Position yourself face-down on the floor with arms stretched out in front of you, palms facing the floor, legs closed.

2. Slowly lift your chest, arms, and legs slightly off of the ground.

3. Slowly so as to feel the tension and resistance, move your arms down toward the hips and legs outward, and then return to the original position, as though you’re performing jumping jacks or a snow angel.

4. Rest limbs on the ground briefly before beginning the next rep.

1. Start in a plank position with your hands directly under your shoulders and your body in a straight line.

2. Keeping your arms straight, retract your shoulder blades by squeezing them together. Your torso will move 2-3 inches towards the ground.

3. Reverse the movement by pulling your shoulder blades apart. Your torso will move 2-3 inches away from the ground.

4. Pause at the top of the movement, and then repeat the flow for the desired number of reps.

1. Lie face down on a mat or a flat surface with your arms and legs extended straight out.

2. Engage your core and lower back muscles and lift your arms, legs, and chest off the ground simultaneously.

3. Hold the position for a few seconds and then slowly lower back down to the starting position.

4. Repeat for the desired number of reps.

1. Grab a towel or t-shirt, hold it in both hands, and stand in either squat position or upright with feet hip-width apart.

2. Hold the towel overhead with your arms extended, and pull on both sides of the t-shirt or towel as hard as you can, as if you were trying to rip it.

3. As you continue to try to rip the towel or t-shirt, slowly bring your elbows out and back behind your body, squeezing your shoulder blades together.

4. When your hands get as close to your chest as possible, slowly return to the starting position and repeat until the set is complete.