Rear Foot Elevated Split Squat Countdown

Do six reps followed immediately by a 6second iso hold in the bottom position with the rear knee hovering just off the floor. From there, without stopping the set, go right into five reps followed by a 5second iso hold. Then four, then three, then two, then one. In total it comes out to 21 reps and 21 seconds of iso holds. To up the ante even further, after you perform the last rep, perform an iso hold for as long as possible. I recommend saving this for the end of your lower bo