NOTE: The "Calories" listed on food labels (Calories with a capital "C") are also called kilocalories (kcal). One kilocalorie or one Calorie is equal to 1000 "calories" (with a lowercase "c"). A single calorie (lowercase "c") is enough energy to heat up 1 *gram* of water by 1 degree Centigrade. Yep, it's confusing. Outside the US, most countries use kilojoules (kJ) as the standard unit of energy on food labels. 1 kJ = 4.184 Calories / kcal.
The way our bodies burn calories is not as straightforward as you might think. In this short video, we didn't have time to get into all the details, but if you want to learn more, read this fantastic blog post by David Despain:
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