Metabolism and Calories; Myths and Reality

What actually is your metabolism; what’s the link between metabolism, your weight and calorie intake; can any foods, powders or supplements speed it up and does yo-yo dieting or restrictive eating have a negative impact? Today evolutionary biologist Herman Pontzer talks fact and fiction and why so many of the headlines are mis-selling us information when it comes to our metabolism, calories, our health and weight management.  
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