Body coordination is ones control of his body. eg: doing many things at same time with both hands, or balance yourself or something else. -to be able to do what you want using the right muscles right away.
People have done it to exercise certain muscles such as the ones for balancing plus you need a good sense of balance
One can use an exercise ball in various ways to assist in getting into shape. The benefit of the exercise ball is that it works ones core muscles, which are muscles in ones stomach that most people do not use. The ball assists with balance and strength.
Voluntary muscles are the ones you can control with your mind and the involuntary ones you cannot control, they do their jobs automantically.
The nervous system sends messages from the brain that tell the muscles to move. So yes, the nervous system causes movement, but the muscles are the ones doing the work.
The muscles that can be controlled are the skeletal muscles and the ones that can't be controlled are the cardiac and smooth muscles!
The abdominal muscles called rectus abdominis are the ones that work hard to enable you to flex your abdomen when doing sit-ups. Other muscles used while doing sit-ups are the external oblique's, tensor fasciae latae and rectus femora's.
Voluntary means doing something because you want to do it. Involuntary means doing something that you can not prevent or stop doing. This terminology is often used in describing muscles to differentiate between muscles you can move like those used in walking and ones that move on their own like those used for breathing.
The good ones do.
You can control voluntary muscles. These are the ones called skeletal muscles.
Cardiac muscles move your organs. they are the ones that are uncontrollable...