You lose weight by burning off your stored calories. If you take in more calories than you use, you gain weight, but if you use more calories than you take in, you lose weight.
It is a unit of energy
calorie
A calorie is the unit of energy needed to heat a litre of water by one degree.
A calorie is a measure of energy. It doesn't make sense to ask how much energy you need to lose energy.
Energy.
Energy
The large calorie, kilogram calorie, dietary calorie or food calorie approximates the energy needed to increase the temperature of 1 kilogram of water by 1 °C.
No, calorie is not a mineral ,it is energy.............
A calorie is a unit of energy. We tend to associate calories with food, but they apply to anything containing energy.
In biology, the calorie is a unit of heat energy. The calorie is used to measure the amount of energy in the chemical bonds in molecules. A calorie is the amount of energy it takes to increase the temperature of 1 gram of water 1°C. Our normal use of the term 'calorie' is used to describe the amount of heat energy in food, but we actually use the kilo-calorie. For example, a cheeseburger that is advertised as having 300 calories actually contains 300,000 calories of energy.
Wrong. The calorie is not an SI unit, and it is confusing because it comes in two varieties: gram when spelled calorie (small c) and Kilogram when spelled Calorie (Capital C). The SI energy unit is the Joule.
The recommended unit for any type of energy is, of course, the joule. The older unit, calorie, is still often used for food. If spelled with a capital "C", "Calorie", it usually means a kilocalorie.