Calories can be a little confusing, but once you master the basics, they get easier to understand.
Technically, calories are units of energy. Specifically, one calorie is the energy it takes to raise the temperature of 1 gram of water 1 degree Celsius.
3,500 calories equal one pound of body weight.
Knowing the figure above can help you cut back or increase calories if needed. For example, to lose 2 pounds a week one would need to eat 7,000 fewer calories per week or expend 7,000 calories a week through exercise or try a mixture of both. If you wanted to gain 2 pounds a week, you’d eat an extra 7,000 calories per week or exercise less, if you’re exercising excessively.
Calorie control is a diet plan characteristic based on the idea that energy intake should not exceed energy needs. In simplistic terms, this means you take in calories from food while you lose calories when you expend energy, such as the energy expended to keep your body working or the energy you expend when exercising.