Every gram of fat produces 9 calories, so if you want to reduce 1 kg of fat, from a medical point of view, you must consume 7700 calories. If you reduce 500 calories a day.

It takes 1 kg 4 days to lose 1 kg. If you lose 1000 calories every day, it takes 7 days to lose 1 kg and 7 days to lose1kg.

However, people have metabolism every day and must have the most basic calorie intake to maintain the needs of the body. Generally speaking, boys need 1600 calories a day and girls need 1200 calories.

Extended data:

To control weight, in addition to exercise, we should also pay attention to the calories in the diet, that is, the intake of calories. Take 100 calories as an example, which is equivalent to the following food quantity.

1 snacks

100 calories is roughly equivalent to a spoonful of ice cream, 1 4 chocolate croissants, half a chocolate cream cake, six and a half marshmallows, a small sandwich biscuit, 23g potato chips, a chocolate bar, seven hard candy fruits, eight preserved apricots and1spoonful raisins.

2. Drinks

100 calories is roughly equal to half a cup of cola, a glass of beer, 125ml white wine, 200ml freshly squeezed orange juice, 150ml chocolate milkshake.

Step 3: fruit

100 calories is roughly equal to a bunch of grapes+an apple, a banana, about 30 mulberries, 4 peaches, a plate of strawberries and so on.

4. Others

100 calories is roughly equal to a boiled egg+a small piece of whole wheat toast, half a muffin cake, a spoonful of peanut butter+a piece of whole wheat bread, 10 slice of cucumber+1 slice of mashed potatoes, oatmeal cookies, a plate of cucumber and carrot +36g of mashed potatoes, etc.

References:

People's Network-/kloc-How much is the food with 0/00 calories?

References:

Baidu encyclopedia-calories