Calories

Before we get into recommending food products and counting calories, a quick refresher course on calories. Calories are a measure of heat energy and they are used to quantify both the amount of energy found in a food and the amount of energy our bodies burn doing activities.

Carbohydrates (both starches and sugars) contain 4 calories/gram.
Proteins also contain 4 calories/gram.
Fat contains 9 calories/gram. Fat is a very dense energy source, which is why our bodies store energy as fat. If you don't burn it off it stays stored.
Alcohol (ethanol) contains 7 calories/gram.
Fiber, which is carbohydrates that are not digestible by the body, do not contribute to calorie counts.

The combination of Carbs, Fats and Proteins will add up to the total calorie count for a food product.