Stand in front of a study chair or plyometric box.
Keeping your back straight and your core tight, step up onto the box so that both feet are on the top.
Next step back down so that both feet are on the ground.
Repeat for the stated number of repetitions
Lie flat on your back with your knees bent and feet flat on the floor. Cross your arms across your chest.
Contract your abdominal muscles, and lift your shoulders off the floor.
Lower your shoulders back down to the floor, keeping your abdominal muscles contracted for a controlled descent.
Repeat for the required number of repetitions.
Stand with your feet slightly wider than your shoulders keeping your weight in your heels and your feet angled slightly outwards.
Put your arms out straight in front of you.
Begin by tightening your core, bending your knees and lowering yourself towards the ground into a squat position. Keep your chest upright and do not allow your knees to cave in.
Continue to bend your knees until your thighs are at least parallel to the ground.
Push yourself back up the start position.
Repeat the movement for the required number of repetitions