Start standing with both feet shoulder-widths distance apart. Looking straight ahead, bend at both the hips and knees, ensuring that your knees remain in line with your toes. Continue bending your knees until your thighs are parallel with the ground. Ensure that your back remains within a 45- to 90-degree angle to your hips. This is your starting position.
On an exhale, push through your heels and jump up as high as you can, extending both your knees and your hips. Bend your hips and knees to land and return to the starting position, ensuring that you maintain "soft" knees to prevent injury.
Repeat for 30 seconds, then take 30 seconds of rest.