The daily activities of the human body also consume calories, and dieters can consume fat through exercise, which can achieve the effect of accelerating calorie consumption and achieving the goal of healthy weight loss. We often associate calories with food, but in fact they apply to any substance that contains energy.

Calorie definition

Calories, as the legal unit of food calories, are widely used in Europe, while calories are used in the United States. Although Joule is the legal unit in China, most people still use calories.

Calorie conversion

Energy or heat of 1 calorie can raise the temperature of 1 gram of water at one atmospheric pressure 1 degree Celsius. 1 calorie is about 4. 186 joules. 4 kcal: the heat required to raise 1 g water from 3.5℃ to 4.5℃ at1atmospheric pressure. 20 kcal: At 1 atmospheric pressure, the heat required to raise 1g water from 19.5℃ to 20.5℃ is about equal to 4. 18 19 Joules.

Adults need at least 1500 calories a day to maintain their physical function. Our body burns calories in food through metabolism, and metabolism breaks down carbohydrates into glucose and other sugars through enzymes; Decompose fat into glycerol and fatty acids, and decompose protein into amino acids; Enter the final metabolic stage, react with oxygen and release its stored energy.