Wednesday, July 31, 2013

All About Jet Lag

 by Brian St. Pierre

What is jet lag?

Have you ever taken a long flight and arrived at your destination feeling weak, tired, or generally awful?  That’s jet lag – and it’s not just your imagination. It’s a genuine physiological phenomenon.  Symptoms of jet lag may include:
  • fatigue
  • insomnia
  • loss of appetite
  • disorientation
  • reduced concentration
  • reduced aerobic fitness
  • reduced anaerobic fitness
  • nausea
  • GI distress
  • joint swelling and stiffness
  • muscle pain and stiffness
Jet lag originates in the nerve cells of the hypothalamus, the region of our brain that regulates temperature, sleep, circadian rhythms, appetite, and hunger.
This part of the brain evolved long before air travel and it responds slowly to changes in external time and light levels. This conflict between “inner time” and “outer time” is jet lag.

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