The basic exercise method is: back against the mat, hold the handle with both hands, bend your knees in front of your chest and abdomen, and press your feet up against the pedal; Then force diagonally until your legs are straight, and then slowly bend your legs to recover.
You can also remove the pedal and cushion, and then put the cushion on the diagonal bracket. Lie on your back, holding the handle at the upper end of the inclined frame with both hands, kneeling down and putting your feet on the cushion frame; Then straighten your legs hard.