Warm up your legs with approximately 10 minutes of low-intensity exercise such as walking, pedaling a stationary bike or marching in place.
Practice regular squat form before you perform squats with Tabata intervals. Stand with your feet spaced hip-distance apart. Align your feet parallel with each other with your toes facing forward. Evenly support your weight throughout your heels and the balls of your feet. Tighten your abdominals by pulling your navel toward your spine to maintain a straight-backed posture. Extend your arms out in front of you at shoulder height. Bend your knees and lower your hips behind you until your thighs are parallel with the floor. Keep your knees in line with your heels without allowing your knees to move forward beyond your toes. Straighten your legs as you lower your arms and return to the starting position. Gently push your hips forward and squeeze your buttocks at the top of the squat movement.
Perform regular squats with the same form you practiced but with a faster pace in the Tabata interval style. Place a clock with a second hand within sight, hold a stop-watch in your hand or a wear a watch on your wrist to time the work and rest intervals. Squat quickly but with good form and move through a full range of motion. Squat as many times as you can within 20 seconds. Use the arm swing -- as you practiced -- by lifting your arms when you squat and lowering them as you stand to help increase the pace of your movements.
Stop the squats and rest for 10 seconds. Remain still or slowly shake out your legs or walk in place.
Repeat as many squats as possible within 20 seconds. Keep the pace of your first Tabata cycle, aiming to complete the same number of squats. Rest for 10 seconds.
Complete eight total cycles of squatting for 20 seconds and resting for 10 seconds for an entire Tabata interval workout.
Count the number of squats in each cycle and aim to maintain the same number throughout all eight cycles.
Modify the number of Tabata cycles according to your fitness level. For example, perform four sets of Tabata squat intervals instead of eight, if needed, until your strength and endurance improve.
Add Tabata squats to your workout routine two or three days a week, but allow for 48 to 72 hours of rest in between sessions. Perform the squats on days you typically do leg workouts such as squats, lunges, leg presses or leg extensions. Substitute traditional squats with Tabata squats for workout variety or add Tabata squats into your training routine for an additional challenge.