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Increasing the metabolism is the fastest way to permanent weight loss, a lowered metabolism is very often the reason weight loss progress grinds to a sudden halt. When weight loss slows a dieter may r
educe food intake further, however progress is still slow because a net loss of protein continues to lower the metabolism.
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How does Human Metabolism Work?- Physical activity
The amount of energy the body burns during daily activities such as exercise, recreation, work, housework, etc. Daily physical activities accoun
t for 20 - 40% of calories burned each day. This part will vary depending on the individual and how active they are each day. A sedentary person will require less calories to maintain weight than a bu
sy worker in a construction site!
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living things must have an unceasing supply of energy and matter. The transformation of this energy and matter within the body is called metabolism.
-Catabolism
-Catabolism is destructive metab
olism. Typically, in catabolism, larger organic molecules are broken down into smaller constituents. This usually occurs with the release of energy (usually as ATP).
-Anabolism
-Anabolism is co
nstructive metabolism. Typically, in anabolism, small precursor molecules are assembled into larger organic molecules. This always requires the input of energy (often as ATP).
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Even if more exercise is undertaken a net loss of protein can occur if calorie intake is low.
-Remember dieters reduce their calorie intake but exercise uses extra carbs so the body must breakdown
extra protein to convert into carbohydrates. More carbs are needed because a less fit individual often has an untrained cardiovascular system and cannot supply enough oxygen for cells to burn fat for
energy during the exercise. Also if no exercise is performed the body has no need to use extra body fat because so little energy is required when inactive.
-Exercise can increase metabolism but the
trick for the unfit person is to perform the correct exercise and not cut calories too much too soon. To lose FAT weight fast the best way is to prepare the body by increasing the metabolism BEFORE c
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Basal Metabolic Rate (BMR)
-In order to compare one person's metabolism with another's, scientists have devised a new buzz word - basal metabolic rate (BMR). Your BMR is the rate at which you use u
p energy when at rest - e.g. when you are sleeping or just lying in bed. You might call it your tick over speed.
- The more you weigh the higher your BMR will be. The metabolic rate of very fat wom
en is 25% higher than that of thin women.
- BMR is much greater in childhood than in adulthood. After the age of about 20, it drops about 2 per cent, per decade.
- People whose bodies contai
n a higher proportion of muscle to fat, tend to have a higher BMR than those with lower muscular proportions - all other things being equal.
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From the viewpoint of diet and weight loss, metabolism is the process whereby the body converts food into energy (or uses it for bodily repairs) or stores it as fat for future use. In simple terms, if
we have a faster metabolism we burn calories more efficiently and store less fat. If we have a slower metabolism we burn calories less efficiently and therefore store more calories as fat. In very si
mple terms, our Metabolic Rate is the rate (and efficiency) with which our body performs these metabolic tasks.
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