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Wolf explores the bidirectional relationship between sleep and metabolism: poor sleep disrupts blood sugar control, increases hunger hormones, and reduces metabolic efficiency. But metabolic health also affects sleep quality.
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Canon
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Wolf argues that the modern environment systematically undermines sleep: artificial light suppresses melatonin, screens stimulate alertness, centrally heated bedrooms are too warm, and urban noise disrupts sleep cycles. Poor sleep is an environmental problem, not a personal failure.
Highlights
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One night of poor sleep increases blood sugar responses to the same meal by 20-30% — sleep is a metabolic intervention, not just rest
Wolf presents ZOE's data: when participants sleep poorly, their blood sugar responses to identical meals increase by 20-30% the next day. Sleep deprivation makes you metabolically less healthy overnight — the same food becomes more fattening.Was this useful?