Calories

This behavior is energy-efficient in an environment where calories can be hard to come by.

You take more calories than are necessary.

The body converts extra calories into fat.

Which foods are rich in calories and which aren't?

The only way to lose weight is to create a caloric deficit by burning more calories than you eat.

How many calories are in 100 grams of butter?

Is eating 1,800 calories a day enough?

My coach eats 6,000 calories a day.

My coach eats 8,000 calories a day and never gains weight.

Tom has been trying to cut down on calories.