Stand with feet wider than shoulders and place your hands on an exercise ball. Roll the ball out as you bend your knees, lowering your hips into a squat. Keep your abs in, your back straight, and make sure you keep your knees behind your toes as you squat. Stand back up as you roll the ball in, squeezing your glutes (avoid locking the knees). Repeat.
Do this exercise with the best exercise equipment. We recommend using a bluetooth chest strap heart rate monitor or a smartwatch for more training optimization & performance tracking.