It will make your muscles squeeze, but there is no movement of the arm and leg joints, such as muscle, push the walls of this type of exercise causes muscles to grow stronger, but not a good cardiovascular system.
Squeeze the muscles But there is no movement of the muscles, joints, arms and legs, as force, pressure walls. This type of exercise makes muscles grow stronger cardiovascular system, but not better.
To make muscle compression. But no movement of joints, limbs, such as muscle, push the wall, this type of exercise muscle growth, strong but the cardiovascular system is bad.