People need to get heat from food or energy substances stored in their bodies. According to age, sex and physical activity, everyone's total calorie requirement is different.
Children, women and some elderly people aged two to six need to consume 1600 kilocalories a day, that is, the intake of staple food is about 800 grams. The main part of human energy consumption is the consumption of physical activity. The energy consumption of the body during strenuous exercise is ten to twenty times higher than that at rest, and the energy required for different activities every day.
Extended data:
Precautions:
1. The energy needed by human body comes from three substances: carbohydrate, fat and protein. Neither vitamins nor minerals have energy. So calories come from carbohydrates, protein and fat.
2. Carbohydrate and protein can release 4 kilocalories per gram, and fat can release 9 kilocalories per gram. So eating too much fat is easy to get fat.
3. The energy ingested from food is consumed by basic metabolism such as respiration, blood circulation and cell renewal. 60% ~ 75%, another 65,438+00% is used for digestion, and exercise consumption is 20% ~ 30%.
4. In the case of normal exercise, just multiply your weight (kg) by 1 1, and you can get the calories you should consume every day. Studies have shown that women who consume less calories than this standard will reduce their metabolic level by 45%.
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