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2 results for “sleep”.

• Why You Get Jet Lag: The Body Clock Explained
  Jet lag has nothing to do with how many hours you flew and everything to do with how many time zones you crossed. Your body runs on an internal clock set to a different meridian than the one on the wall — and jet lag is the friction of re-syncing it.
• What Sleep Debt Actually Does to Your Brain and Body
  Pulling an all-nighter feels like a neutral trade of time. The biology says otherwise: sleep loss costs attention, immune defence, metabolic regulation and memory consolidation — some of it at thresholds far lower than people believe. Here is what the research shows, at honest effect sizes.