Calories are units of energy. We often associate calories with food, but in fact they apply to anything that contains energy. Most of us associate calories with what we eat or drink, such as "This soda contains 200 calories". In fact, the calories listed on food packaging are calories, and the capital letter C is also marked, which is equivalent to the heat required to raise 1 000 grams of water from 14.5 degrees Celsius to 15.5 degrees Celsius at1atmospheric pressure, which is about equal to the internal energy of 4 186 joules. (1000 calories = 1 calories). So, actually, this can of soda contains 200,000 calories (but don't worry, it also applies to exercise-when the exercise chart says that you jog for 2 kilometers to burn 100 calories, it is 100 calories). In English, "calorie" (lowercase) means calorie, which is about 4. 186 joules, and "calorie" (uppercase) means calorie, which is about 4 186 joules.

Generally speaking, there are two kinds of calories:

Calories, also known as capital letter C, are most commonly used in food labels, which is equivalent to the heat required to raise 1 000 grams of water from 14.5℃ to 15.5℃ at1atmospheric pressure, which is about equal to the internal energy of 4 186 joules.

Small card, also known as cal, is common in scientific research literature, 1000 small card = 1 big card (1 card).

Just as computers consume electricity and trucks consume oil, so do human daily activities. Heat not only provides energy for people's exercise, daily work and life, but also provides energy for human life activities, blood circulation, breathing, digestion and absorption. People who lose weight can burn fat through exercise, which can accelerate calorie consumption and achieve the goal of healthy weight loss.

Calories come from carbohydrates, fats and protein.

Heat generated by carbohydrates = 4 kcal/g.

Heat generated in protein = 4 kcal/g.

Heat produced by fat = 9 kcal/g.

1. People should know how many calories they should consume every day and how many calories their bodies need. It depends on many factors, such as how soon you want to finish your weight loss plan, or how many calories you burn in sports activities. Under normal circumstances, the daily calorie intake of women should not be less than 1200.

2. Have your own diet plan and implement it perfectly. Of course, you can adjust at any time, but if it is not necessary, you'd better keep the basic plan. There are at least three meals and two snacks in the plan. Feeling without food will make it more difficult to lose weight. Make sure you get enough energy in each food group, especially fat and protein, which will help you feel full.

3. Correctly track daily calories. There are many ways to track, such as recording in a table. Remember to record any extra snacks and drinks, including soda and juice. Write down the amount of food and snacks you eat at each meal. You can get the exact number of calories by measuring or weighing the food. You can also consider using a calorie counter. At the end of each day, calculate the total calorie intake. Try to distribute calories evenly throughout the day.