Jet Lag Snacks: How Foods Affect Your Body's Internal Clock

Ever stumble off an all-night flight and wonder whether you should be eating breakfast or dinner? Your biological clock may be highly adaptable, but when it’s thrown off-balance, nothing else feels quite right.

Our bodies’ circadian clocks – which regulate our hunger, tiredness, digestion and dozens of other biological processes in response to the time of day – are kept in balance by a delicate dance of hundreds of chemicals; each of them influenced by a specific type of environmental fac

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