The calories in a croissant: about 400 calories.

A croissant has about 400 calories, which is a very high-calorie food. 400 calories is equivalent to 44.45 grams of fat. People metabolize every day and must have the most basic caloric intake to maintain the body's needs. Generally speaking, boys need 1,600 calories a day and girls need 1,200. Big card.

The origin of the croissant: Legend has it that this delicious croissant-shaped bread commemorates the fact that in 1683, a baker working late at night in Vienna noticed the movement of Turkish soldiers digging tunnels under the city, and then warned Citizens led to the failure of this night attack. This sheep's horn shape is taken from the crescent shape on the Turkish flag.

What is heat?

1. What is heat: The human body consumes energy every moment, and this energy 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.

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

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.