People around the world burn roughly the same number of calories per day, regardless of lifestyle. Yes, you read that right. A hunter-gatherer walking mile each day in a highly active lifestyle burns essentially the same total daily calories as a desk worker in an industrialized nation. This one finding alone changes everything we thought we knew about metabolism. Your Body Has a Metabolic Thermostat Think of your total calorie burn like a thermostat in your house. It doesn’