what is a calorie and explain 5 to 6 line

Dear student The definition of a calorie is a measure of energy in food, specifically the measure of heat needed to raise a kilogram or a gram of water by one degree Celsius.Calories in food provide energy in the form of heat so that our bodies can function. Our bodies store and "burn" calories as fuel. Many dieters count calories and try to decrease caloric intake to lose weight. Regards