The calories of chicken legs are 181 kcal/100 grams, and a pistol chicken leg has about 360 kcal.

Heat refers to when the change in the state of the system comes from the destruction of thermal equilibrium conditions, that is, when there is a temperature difference between the system and the outside world, we say that there is thermal interaction between the system and the outside world.

The result of the action is that energy is transferred from the high-temperature object to the low-temperature object. The energy transferred at this time is called heat. Heat and work are two different forms of energy transfer that occur during system state changes. They are measures of different forms of energy transfer. They are both related to the intermediate process of state change and are therefore not functions of the system state.

The human body consumes energy every moment, which is provided by thermogenic nutrients in food. Nutrients in food that produce calories include protein, fat, sugar and carbohydrates.

They are oxidized to produce heat for the body to maintain life, growth, development and movement. When the supply of heat energy is excessive, the excess calories will be stored as fat. Over time, the body will gain weight.

Unit of calories: In nutrition, "kilocalories" are used as the unit of calories. 1 kcal is the amount of heat required for 1L of water to rise 1 degree from 15°C. The unit of heat: kcal, 1 kcal = 1000 calories.

There are three main parts in the way of calorie consumption. The first part is the basal metabolic rate, which accounts for about 65~70% of the total calorie consumption of the human body. The second part is physical activity, which accounts for about 15% of the total calorie consumption. ~30%. The third part is the thermal effect of food, which accounts for at least about 10%. The proportions of these three have been roughly fixed.