circadian rhythm - a pattern that repeats every day, insomnia - trouble sleeping , jet lag - a tired feeling caused by long-distance plane travel, melatonin - a chemical that makes you feel sleepy, REM sleep - a stage of deep sleep when dreams happen, reset - to move back to an original position, retina - a part of the human eye , time zone - one of the twenty-four sections of Earth with its own time,

The Body's Clock

بواسطة
طباعة
تضمين

لوحة الصدارة

النمط البصري

الخيارات

تبديل القالب

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