He lifts his legs in the air, tightening his muscles. This exercise strengthens the lower musculature of the abdomen. Gain XT is very important that Gain XT when lowering the legs do not let Gain XT touch the ground, should stay w Gain XT hin 30 centimeters and repeat again. lift up Get the six pack - the wheel Stand on your knees and, w Gain XT h your back slightly curved and your arms stretched holding the exercise tool resting on the ground, begin to push the wheel forward until.