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<p>[QUOTE=&quot;desertgem, post: 1638840, member: 15199&quot;]They are correct, heat energy is the same in all physical and chemical reactions outside of nuclear fusion, which doesn&#039;t happen at earth temperatures. The current term is the Joule as a energy measurement. 4.18 J =1 cal. Food stuffs are measured&nbsp; in kilocalories ( use of capital C, Cal.). However, not all calories input into the human are used completely and most efficiently. Secondly, most people do not accurately measure the food they are taking in, when they compare. Also they do not really know how many calories value are released from the food. If the food label say 4 oz is 200 C., it may not be burned 100% due to the persons metabolism. You can&#039;t just look at an exercise book and see that x amount of time burns 200 C. because your metabolism may be lower than average, or you weigh more or less than the exerciser who were used to determine it. The ONLY efficient way is to measure your exercise oxygen in/carbon dioxide out. Those are the TV commercials you see with RG3 on the treadmill, or to totally immerse you in a pool at a set temperature and see how much heat your body gives off , and convert that to calories going into the water.</p><p><br /></p><p>Not all groups of people have the same ratio of brown fat cells/white fat cells. White fat cells are only for storage of fat while brown fat cells function metabolically more like muscle cells for breakdown and energy release.[/QUOTE]</p><p><br /></p>

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