This is a means of physical
culture that has fallen by the wayside over the years, much like
hand balancing. Muscle control involves
flexing and relaxing the muscles individually and in groups.
By practicing these moves you not only gain a stronger command of the
muscles but will be able to make them dance. Many old time strongmen
like Maxick and Otto Arco had muscle control in their acts. They would
move from position to position showing off their muscles and the
control they had over them.
But this practice also increase your mind-muscle connection. And that
means on thing: you become stronger.
Their are tons of different moves for every muscle in the body. Maxick
and others had courses available to teach this art. Though some of them
promoted these as the end-all be-all of strength, I think its better to
add in to your other training. Definitely muscle control is different
from other methods and you should gain the benefits by giving it some
practice.
Here is a video showing off some abdominal muscle control The first two
moves, flexing and the vacuum, can be done by most anyone and certainly
after a little practice. The second two, the rope and belly dancing,
may take a little more.