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The New Science of Metabolism and Weight Loss

The Art of Manliness

CHAPTER

Understanding Metabolism and Energy Expenditure

This chapter explores the multifaceted processes of metabolism, detailing how the body converts nutrients into energy and the significant role of involuntary functions in energy expenditure. It challenges common myths by highlighting that most energy use stems from basic bodily functions rather than just exercise, introducing concepts like NEAT and the influence of circadian rhythms. The discussion extends to anthropological insights from the Hadza people, revealing that their high physical activity levels do not significantly increase daily caloric burn compared to Western populations, reshaping our understanding of metabolism and energy balance.

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