What They Are
A measurement of energy in food. Scientists estimate it using a formula that factors in a food's macronutrient content. The key word here is estimate—things like fiber or how much a food is processed can affect calorie count.
The calories burned by digestion, or why 500 calories worth of cake make you fatter than 500 calories of broccoli. The harder a food is to digest, the more energy you burn during the process. Sugar, fat and refined carbs break down more easily. Cooked foods digest faster than raw, as do processed foods (a burger, for example) versus unprocessed (a steak). Meat and high-fiber foods take more energy to digest and yield fewer net calories.
Calorie CaveatYour Garmin says you torched 500 calories. You decide you deserve an extra slice of pizza. But you'd have burned nearly 70 calories parked on your chair during that same hour. So your ride probably dispatched closer to 430. "People overestimate what they burn," says Stephen Secor, PhD, of the University of Alabama. The real amount also depends on factors like body composition and fitness level. The take-home? Be conservative about calories and fuel up on foods that are as close to their natural state as possible.
3,500Number of calories in a pound of fat. When you take in more calories than you burn, the excess is stored as fat.
How Many You Torch
You're burning just over one calorie a minute while you sit and read this article. Hop on your bike and you'll rev that number closer to eight.Search for a cycling event