adviceman49 answered Thursday July 26 2012, 10:28 am: Ten to fifteen pounds is not only a great deal of weight to loose in such a short period of time. You should first find out if you really need to loose that much weight, especially at your age with your body changing and going through puberty.
Being a few pounds underweight, as few as say five to ten pounds is more harmful than being the same amount of weight over weight. Before starting a diet of such proportion you need to consult your doctor and be under the doctors supervision while dieting.
The why of this is because the body needs a certain amount of calories to function. When It doesn't get what it needs it starts feeding off itself. This is good when we need to loose weight. It is bad when we don't need to loose weight because there is nothing to feed off of.
When that happens the body goes into self-protection mode. This mode tells the body to support the heart and mind above all others.To do this the body starts shutting down different systems. First the kidneys, then the liver then the lungs and finally the body goes into cardiac arrest. This is what kills anorexia and bulimics. The lack calories to run the body and the loss of electrolytes.
Now being just a few pounds under weight probably won;t kill someone but it will cause them medical problems that if go unchecked and untreated will effect them for a life time.
At you age to lose of 10 to 15 pounds is a lot of weight to shed at this age and should not be done just to have a models body, which doesn't exist in the first place. Unless yo are terribly over weight do not diet. Even then mom and your doctor need to be supervising. [ adviceman49's advice column | Ask adviceman49 A Question ]
Rena-Chan answered Thursday July 26 2012, 7:12 am: A good way to lose weight is to eat healthy and do plenty of cardio. Cardio exercises include running, jogging, swimming, biking.. anything that really gets your heart pumping. But while do this, you also run the risk of stretch marks.. No one likes those -.-; So while you are doing cardio, it would not hurt to also do things like sit ups, crunches, and small weight lifting, etc etc. To ensure you tone your body as well as lose weight. It may take some time to get to your desired weight, but so long as you keep to it, you'll lose that weight in no time. Just check out youtube or google for exercising videos and exercising techniques as well. But considering how young you still are, you will lose that weight and be fit in no time. But please do remember, In order to keep your look, you have to exercise regularly. Exercise for a day or two , and then give your body a rest, enough time to heal from the breaking down and rebuilding. [ Rena-Chan's advice column | Ask Rena-Chan A Question ]
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