Calcium is water soluble, but not fat soluble. It is the fifth most dissolved ion in seawater. On the other hand, fat is soluble into calcium in the body. The calcium will exâ¦tract the fat from food in the digestive system, and they combine to form a foamy substance which is not absorbed by the body, and so the fat will be flushed out.
Studies show that it is about 20 percent of the resting metabolic rate, which is about 1,300 calories a day, not of the total metabolic rate, which is about 2,200 calories a day, so the brain uses roughly 300 calories.
Yes â¦ you can even burn calories by thinking â¦ and quite a few of them, at that. Your brain makes up only about 2 percent of your total body weight, but it uses 20 percent of your resting metabolic rate (the total amount of energy your body uses on a non-active day, i.e. the calories your body burns just to keep functioning).