What member of your body does jump jacks comfort you draw from within shape?
Answers: Your heart... It's a good Cardio workout not a strenghtening work out!
Jump away!! :)
Jumping jacks is a heat up exercise it raise your heartrate and body temp. It suppose to prep you to run or some other form of work out, so it mostly cardio. Other than that it works out your rushed reflex musles in your calfs but markedly little. its just for cardio...