1. Start by standing or sitting with your arms relaxed at your sides, palms facing inwards towards your body.

2. Flex your biceps as hard as you possibly can, and bring your fists up to your shoulders, keeping your elbow close to your body.

3. Squeeze even more at the top of the movement, and then lower your fists back down to the start position, maintaining flexion throughout.

4. Repeat for the desired number of reps.

1. Grab a towel, t-shirt, band, or any sturdy, lightly-stretchable object you can pull apart without ripping. Try to rip the object apart with both hands.

2. As you maintain tension, keep your arms straight and raise your hands up in front of your body all the way overhead.

3. Reverse the movement, still maintaining tension, until your hands lower to the starting position.

4. Repeat for the desired number of repetitions, maintaining tension throughout.

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. Start by standing or sitting with your arms relaxed at your sides.

2. Flex your biceps as hard as you possibly can, and bring your fists up to your shoulders, keeping your elbow close to your body. 3. Squeeze even more at the top of the movement, and then lower your fists back down to the start position, maintaining flexion throughout. 4. 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. Begin standing with your feet together and your arms at your sides.

2. In one motion, jump both feet out to the sides and simultaneously raise both arms overhead.

3. Return to the starting position by jumping your feet back together and lowering your arms to your sides.