Keto Flux Reviews The mites are more difficult. You must use your back muscles to lift your upper body and lift your legs to keep your thighs off the ground. This action achieves both stretching and exercise. Exercise your back, pay attention to the position of the force, do not lift the neck, to avoid injury. Lower back discomfort should also stop immediately.On the prone pad, open your hands Actively pull up the right leg to the highest point and bend your knees Keep your right leg to the left and swing your right foot to the left as far as possible.