Exercise! Body movement is the heart of life!Exercise is voluntary contracting and relaxing opposing muscle pairs. This action across the joints of skeletal long bones causes movement of a body part, or of the body. The heart is an independent muscle, not attached to cause movement, it acts involuntarily, and it pumps the blood, without which all other function stops. The brain, is a central communication center, and from it voluntary movement is initiated.
Meanwhile, consider a cell basic. This adage - "If you don't use them, you lose them", is apropos. For example, in Polio the anterior horn cells are knocked out and subsequently the muscles that cannot be activated wither. In this case the muscle receives no reflex stimuli and it remains flaccid.The unused muscle loses function.
When, as in cerebral palsy, the upper motor nerve area of the cortex is damaged, the voluntary use of some muscles is missing, but the muscles are tonic, are reflexly in a continuous state of contraction. Such a limb is held in unusual position and resists movement. We note that the unused muscle wastes away but reflexly toned one doesn't. Skeletal physiology requires them to work in pairs. To bend and straighten a joint, for example, the muscle at the back of the upper arm extends the forearm, and the one in the front of the upper arm flexes the forearm. And, by tensing the two opposing muscle groups simultaneously, static tension, you can strengthen and build muscle, without equipment, like Charles Atlas did. But equipment makes it easier.
It is apropos to note that an immobilized joint becomes stiff. This is a major concern to the orthopedic surgeon who treats a broken bone near a joint. And it is also the concern of the physio-therapist who institutes passive movement to a joint where active muscle movement is lost.
Exercise is a way of using up energy stores. Mostly we like eating more than we like depleting the potential energy stores, and that is a reason for becoming overweight. It seems like good logic to appoach weight loss with - eat a little less and exercise a little more. Is exercise good for you? Yes, if a little daily is good for you, and, a bit more of it is even better, then, should you do it with might? "As things done by halves are never done right!" Actually,take a word of caution, don't make sudden changes in exercise levels. The vigor and length of workout call for a moderated phase-in. If you've been lazy, then is the risk high, that you will want to have today, what should take a few weeks or months to acquire. You can overstress skeletal muscle to point of trauma, which might set you back and even put you off of a healthier life style. And, if middle age, and beyond, and you've been very inactive, remember, go it slow for your 'ticker's' sake. In some cases medical or other supervision for an exercise program is prudent but on average a common sense approach of gradually increasing the intensity and length of workout is adequate. Here is a concluding hint - subtract your age from 200, and use this number as the guide to the maximum heart rate you strive for at your age in the aerobic workout. Remember, as an inactive individual without contraindications, you start below that rate and work your way up gradually. Perhaps with time we might find someone that offers coaching in progressively accelerated cardiopulmonary exertion(PACE), with programs specific for different ages and medical states.
Walking, swimming, and cycling are all healthy
pastimes. These activities, generally, require
little in extra equipment costs. For those who
have this special interest, here is information
about
bicycles and cycling.
Also, using an
electric bike or scooter
uses less energy than walking, but it is "greener"
than using a car or SUV, so a look at such is
relevant in today's world. And, if you want to
broaden your exercise routine to include specific
muscle building, and you are looking for additional
ways to enhance cardiovascular fitness, then is it
likely of interest to see this site ; -
(http://www.workout-run-box.com/index.html),
which is gone,14/10/2008, perhaps it will return.
And, you may want to check out having a
personal trainer by phone.
Or, too, it may be of interest to view a site
with a theme of
healthy big muscles fast.
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