Your Brain Has 2 Secret Sleep Controllers 🧠🌙

Added: 2026-06-03

[00:00:00]What is sleep? Scientifically speaking they call it a neurological state which is regulated by two systems. Ok?

[00:00:06]One of those two systems is called homeostatic drive. Homeostatic drive is basically your sleep pressure. Which means how much sleep are you getting? People say I am feeling very sleepy. That means very high sleep pressure. And the second thing is Circadium Rhythmum. Which is basically your biological clock. Yes, there is a clock installed inside you too and according to that also you get the signal of sleep. So first of all, what is sleep pressure? Sleep pressure increases the longer you stay awake. The longer you don't sleep, the longer your sleep pressure will gradually increase. Eventually it will increase so much that you will not be able to wake up.

[00:00:41]Right? What is this happening? It's a chemical inside you. Adenosine.

[00:00:45]A chemical called adenosine enters your brain. It keeps growing as you stay awake.

[00:00:50]As you stay awake, adenosine rises and the more adenosine rises, the sleepier you will feel. The second thing that I spoke about was circadian rhythm which is varied. It is an internal clock. We have a 24-hour internal clock. Ok? And this is a part of the brain. It is very difficult to pronounce. Still, I will tell you. The suprachiasmatic nucleus is in the brain. It has this clock installed in it and it responds to light, like most clocks.

[00:01:19]But even when he doesn't have electricity, he still knows that he has his cycle in 24 hours.

[00:01:24]When morning light normally comes, your body tells you to get up.

[00:01:29]That is why there are many people who wake up even a little bit in the morning when there is light.

[00:01:33]And when darkness comes, your body releases melatonin, and that's a different compound in the brain. It makes you sleepy again