Avoid jet lag - According to a Harvard animal study, the sleep-wake cycle can be reset by fasting for 12-16 hours. So to avoid jet lag, the researchers offered this rule-of-tum...

  1. Figure out when breakfast is served in the new timezone
  2. Don't eat for 12-16 hours before that time

Avoid eating for 12-16 hours - The Harvard study suggests that delayed eating helps reset the sleep-wake cycle, which could help reduce jet lag or adjusting to working a swing shift.

Food Clock - As the circadian rhythm is regulated by our exposure to light, research Clifford Saper believes he's found a "food clock" that takes over when we are hungry. Further, the food clock appears to override the circadian clock, helping you adjust to a new time zone in a single day. Normally, people take a week to feel normal in a new time zone or sleeping schedule.

Reason? Researchers speculate this adaptation may have prevented starving mammals from sleeping when they should be foraging for food.

"One starvation cycle is enough to override the traditional light-based circadian clock"

Staying awake and forcing yourself to sleep in accord with the new timezone's clock should accomplish the same thing. That's why the advice works. It's not the sleep so much as the fast caused by the extra long sleep period needed to "catch up" on missed sleep.

Source - Easy way to reset your sleep cycle: Stop eating | Parenting Squad

Overcoming Jet Lag
by Charles F. Ehret

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