Calories come from three sources:
Protein: 4 calories per gram
Fat: 9 calories per gram
Carbohydrates (such as sugar): 4 calories per gram
Basically all food is an combination of these.
All foods and drinks (except for water) contain at least some calories in them.
chicken breast, roasted, no skin
Ice cream and potato chips are foods that provide calories but very few essential nutrients.
calories give you energy and provide nutrients to help the body
Nutrients that contain calories like proteins, fats, and carbohydrates provide energy when consumed.
vitamins and minerals
Calories provide the body with nutrients and energy for the body to survive.
fats or lipids
Lipids, also known commonly as fats, provide nine calories per gram ingested.
Fat
Carbohydrates
Calories provide nutrients and energy for your body. In excess, they can also lead to weight gain.
protein and carbohydrates produce 4 calories per gram (fat produces 9 calories per gram).
Because alcohol does not provide any nutrients!! But it does provide 7kcal/g if you want those extra calories.