Решетников Андрей

We own a complex biological system whose processes are controlled by the brain. In one of its areas - the hypothalamus - is the so-called suprachiasmotic nucleus, which regulates our biological clocks - circadian rhythms.

All living organisms on our planet have circadian rhythms. They control the intensity of various biological processes, for example, hormone production. Most often, circadian rhythms are tied to the change of day and night, but our body, among other things, knows how to adjust very well to the daily routine, "remembering" the moments when we get up and when we go to bed.

Protein PER1 plays a large role in changing the sleep-wake cycle. When its level in the body drops, our heartbeat slows down, and the level of pressure and temperature drops. This is what happens during sleep. After waking up, the level rises, "accelerating" the biological processes of the body - we feel cheer.

An unexpected wake-up call is always a stress for the body. To make it at least a little smaller, the body begins to adjust the circadian rhythm of protein production PER1 during alarm call. So our body tries to make the stress of early awakening not so strong for itself: even in a dream, the heart rate gradually increases, the pressure increases, the hormonal background increases. Over time, the brain adjusts so accurately to the time of awakening that we open our eyes a few minutes before the alarm rings. Listen to yourself: at these moments we feel much more vigilant than if we woke up from his ringing.