Why Are You Awake Right Now? Protein Modifications and Circadian Rhythm

After waking up this morning, your body began a well-established set of procedures to prepare for the day: heart rate ramped up, body temperature increased, and hormone levels shifted. And tonight, you’ll probably start to feel sleepy around the same time you did last night, as other physiological changes start to take place. This predictable cycle, of course, is your circadian rhythm, the hard-wired biological changes that help your body achieve its full set of diurnal activities, from slee

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