2015-03-18 What Causes Jet Lag and How to Avoid It
From VOA Learning English, this is the Health & Lifestyle Report. Our bodies react to daylight. In fact, light is the most powerful environmental signal for re-setting our biological clock.…
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From VOA Learning English, this is the Health & Lifestyle Report. Our bodies react to daylight. In fact, light is the most powerful environmental signal for re-setting our biological clock.…