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Feeling inactive, sleepy and lethargic after lunchtime is a common thing. The activity levels of our body basically depend on our lifestyle and also on our body clock or circadian rhythm which is controlled by the Suprachiasmatic Nucleus in our brain by releasing the hormone melatonin which makes us feel sleepy in afternoon.
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Our mental alertness, mood, stress, hunger levels, heart mechanism, and immunity are controlled by the various rhythms synced to the thermostat-like biological clock in our body.
Circadian rhythms control our eating habits, body temperature, digestion, hormone leve...
It is impacted by three main factors:
Endogenous rhythms exist because the body has biological clocks that keep time. Biological clocks can be adjusted by environmental cues, such as changes in temperature.
In humans, the Suprachiasmatic Nucleus (SCN) is the main biological clock that regulates circadian rhythms of sleep. The S...
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