STARTING POSITION:
Stand straight with your feet shoulder width apart. You need to place a bench between your legs.
MOVEMENT:
Bend the knees and move your butt back, lowering your legs until your thighs are parallel to the floor while you inhale. In a fast movement extend your hips and knees and jump on the bench while you exhale. Try to land on a soft way on the bench.
TIPS: Make sure your knees are always pointing towards the toes. Your head and chest should always look forward.