after a long period of exercise a muscle can cramp
your muscles tighten up
you simply tighten your diafram muscle (tighten your stomach)
When you tighten a muscle, the muscle fibers contract, causing the muscle to shorten. This allows the muscle to generate force and exert tension on the bones, resulting in movement of the body part connected to that muscle. Tightening a muscle can also help stabilize joints and maintain posture.
What happens to the bones when muscle shortening
muscle contraction
When knots tighten when pulled, they become harder to untie and may even become permanent.
Bronchoconstriction or bronchospasm is the medical term that refers to the contraction of the smooth muscle in the walls of the bronchi and bronchioles that tighten and squeeze the airway shut.
When a muscle contracts, it shortens in length.
it doesnt let anything in it
I think stomach exercises will build muscle and tighten existing ones. Once you have tightened your stomach muscles using one routine, change it up a bit and build muscles in another area.
The muscles constrict (tighten) and then relax to help pump the blood.
Without tensing the muscles of your leg, buttocks or abdomen, imagine that you are trying to control the passing of gas or pinching off astool. Or imagine you are in an elevator full of people and you feel the urge to pass gas. What do you do? You tighten or pull in the ringof muscle around your rectum - your pelvic muscle. You should feel a lifting sensation in the area around the vagina or a pulling in ofyour rectum.One exercise consists of both "tightening and relaxing" the muscle. It is equally important to control when your muscle tightens and re-laxes. Therefore, you should relax for the same amount of time you tighten. Be sure to relax completely between each muscle tighten-ing. There are 2 type of muscle contraction you will need to practice - Short quick contractions (2 seconds) and long (3-10 second) con-tractions. To do the quick muscle contractions, contract or tighten your pelvic muscle quickly and hard, and immediately relax it. For thelong or sustained contractions tighten your pelvic muscle and hold for a count of 3 seconds, then relax the muscle completely for acount of 3 seconds. Over time you will increase the length of time you tighten the muscle to 10 seconds.These exercises can be practiced anywhere and anytime. Individuals are instructed to do the pelvic muscle exercises (Kegels) threetimes daily. A minimum of 50-60 PMEs per day is recommended. A gradual increase in number of contractions over a period of PMEpractice has been shown to increase muscle strength significantly which in turn tightens your rectum.