it tightens your upper body like your sholders and yours arms and your stomach
my dick inside your mom's mouth
The muscles can only pull, not push. So, to move a limb, one muscle relaxes while the other muscle pulls.
The muscles can only pull, not push. So, to move a limb, one muscle relaxes while the other muscle pulls.
The muscles can only pull, not push. So, to move a limb, one muscle relaxes while the other muscle pulls.
The muscles can only pull, not push. So, to move a limb, one muscle relaxes while the other muscle pulls.
The atriums squeeze to push blood to the ventricles, and the ventricles push the blood to separate parts the body.
The muscles can only pull, not push. So, to move a limb, one muscle relaxes while the other muscle pulls.
It uses body parts called scutes to push the snake in a straight line. Some snakes can push itself up and repeating the push to move. :D
It is called force. Force is the push or pull exerted on a body that can change the shape or size, speed and velocity or other physical properties of that body.
it makes up the respiratory system.
The heart does not just "help"- it is the primary force to push blood through the arteries to all parts of the body. It is a pump.
The heart does not just "help"- it is the primary force to push blood through the arteries to all parts of the body. It is a pump.