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Scientific Weight Loss - Is It Rocket Science?
By Jennifer Olsen
Dieting should not be so complicated that it frustrates people. Many of those "experts" with a bunch of letters after their name would like you to believe that only they can figure out the ins and outs of dieting. The science behind dieting really is very simple. A basic understanding of physiology and math is all it takes figure out how dieting works.
Here are the basics:
Calories, which is actually short for kilocalories, is a measure of energy. You don't need to know all of the particulars, simply that calories are the measurement of how much energy potential a food contains. The body uses energy for everything it does. It is constantly in flux and needs energy all day, even at rest. This calorie consumption is a persons resting metabolic rate. A very rough estimate of a persons resting metabolic rate is about 10 calories per pound of lean body mass per day (it is calculated on lean body tissue because fat is metabolically inactive.) So if a 180 pound person has a lean body mass of 160, their resting metabolic rate would be 1,600 calories. (See, this is where the basic math comes in.)
A simple rule in human physiology is that the body will burn calories as needed and then excess calories will be stored by the body in fat stores. These stores are reserves for future needs. The body needs some fat. It cushions the organs, the joints, and serves as a reserve energy source during prolonged energy expenditure. Excess beyond this essential amount is not necessary and can be unhealthy.
So, if that 180 pound person has a resting metabolism of 1,600 calories per day and through daily activities, such as work, working out, playing, etc., burns an additional 500 calories, they will need 2,100 calories per day to maintain their current weight.
A pound of body fat contains about 3,500 calories of potential energy. That means to lose a pound of fat a person needs to liberate 3,500 calories of energy. In a week (7 days) that means either taking in 500 calories less per day or burning 500 calories more. So, going back to our 180 pound person, they would need to either drop their caloric intake by 500 calories (to 1,600 calories), exercise for an additional 500 calories, or some combination (ie. Eat 250 calories less and exercise to burn 250 calories per day.) This would result in the loss of one pound of body fat in a week.
A common problem with calorie restriction diets however is that the body is set to maintain. If the number of calories being taken in is not sufficient to maintain the status quo, then the body slows down the rate of calorie (energy) consumption by the body (metabolism.) After a short time the body only burns the number of calories being taken in. That is why many diets manipulate how and when you eat. By eating different food combinations, and exercising before a meal, you can push the body back into a negative metabolic state (losing fat and maintaining lean tissue.)
To get started with a diet, it is important to understand the very basics of calories and how they work. Once you have that mastered, then you can take your studies a little further and understand how proteins, fats, and carbohydrates each play into the equation. Again, even this concept is not an advanced science.
Jennifer Olsen was a master of failing at different diets. She understood that there were more to losing weight then just going on a diet. Today she has lost nearly 50 pounds with the calorie-shifting diet and learned easy ways to change routines and habits to keep weight.
If you put Calorie Shifting To Work there really is no need for expensive supplements. It is the food you already eat (well, minus a thing or two) but you start eating according to a specific scheme.
Article Source: http://EzineArticles.com/?expert=Jennifer_Olsen
http://EzineArticles.com/?Scientific-Weight-Loss---Is-It-Rocket-Science?&id=961798
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