The weight of the brain only accounts for about 2% of the body weight, but the energy consumed accounts for 20% of the total consumption-oxygen is transported to the whole body through blood, and the oxygen consumed by the brain accounts for 20%. Therefore, doing more mental activities can consume more calories, which is conducive to slimming. In addition, it is worth mentioning that the energy source consumed by the brain can only be glucose, which is different from the heat sources consumed by other body parts, such as protein, lipids and sugars. Therefore, if you don't pay attention to this in your diet, blindly reducing your intake will reduce the efficiency of your brain.

The power of the human brain is only 12 watt, which is only equivalent to a refrigerator indicator light, but it can accomplish many tasks that the refrigerator indicator light can't, which shows how efficient the brain neurons and nerve bonds are. The energy consumed by your brain in a day's work is equivalent to the energy contained in two larger bananas. Surprisingly, although the brain is more efficient than the mechanical system, from a biological point of view, it is a big energy consumer. The weight of the brain only accounts for 3% of the body weight, but it consumes about 1/6( 17%) of the energy of the human body. Unfortunately, this doesn't mean that you can maintain your vigorous learning energy by eating more. In fact, most of the energy consumed by the brain is spent on the maintenance of "equipment", that is, by maintaining the electric field between the brain neuron membrane (which can stimulate the communication between brain neurons) and other brain neurons, to maintain people's thinking ability. And racking one's brains to think itself will not cause too much extra energy consumption.