Why do people eat warmer than not eat in winter?

There are three ways of heat transfer: conduction, convection and radiation. When we eat a bowl of rice, hot rice will transfer heat to our bodies, so we will feel warm and hot.

Second, the thermal effect of food. In addition to simple heat transfer, we know that it takes energy to pick up vegetables and chew them when eating, and extra energy is needed to digest, absorb and metabolize nutrients in food. Nutritionists call this extra heat energy consumed by eating food thermal effect, which is also called the special dynamic function of food.

So what activities of the human body are the reasons for the thermal effect of food? First of all, in the process of eating, the movement of digestive system and the secretion of digestive enzymes will consume calories. Secondly, when food is oxidized and decomposed in our body, it will not only release heat energy itself, but also increase the basal metabolic rate of human body, that is, accelerate human metabolism.

This stimulates the human body to produce extra heat consumption, and at the same time raises the body temperature. The thermal effect of food is also related to the amount of food eaten. The more you eat, the more energy you consume. In addition, it is also related to the speed of eating. Eating fast consumes more calories than eating slowly. When eating fast, the central nervous system is more active, hormones and enzymes are secreted faster and in larger quantities, and the rate of absorption and storage is higher, so the energy consumption is relatively high. So, if you want to be warm, you have to eat quickly. ? .