This query is very common which we always do it with ourselves. When we think deeply such a queries often come to our mind. When we sleeping dose our mind sleep? How our blood pressure, breathing controlled? When we are sleeping. How our body still works when we are sleeping? Lets discuss it and i would give you the answer of these your canny quires.

All animals sleep like human. Even jelly fish without brain also sleep. When it sleep its position is horizonal in upright position. It moves slowly and capture food slowly.

When we are sleeping we need safety and always threat of predators. While sleeping all animals response to little movement. How dose it work?

Asymmetrical sleep

When we are sleeping our brain some part are sleeping and most of parts awaking and working. This is called asymmetrical sleep.

Same other animals and birds sleep asymmetrical sleep.

All invertebrates have two part of mind. Right hemisphere and left hemisphere. When we are sleeping one hemisphere is working and another is asleep. This is called unihemisphere. One part is working completely and another part is completely sleeping. Lets discuss it with few examples.

Fishes

Some finishes breathing process is continuously controlled by their mind. They remain in water but after few minutes they go upper surface of water and open their mouth in open air out of water take small amount of air inside and goes down again. Actually they get oxygen and move deep in water.

But when she go to sleeping posting. One part of fish out of water and one is inside the water. Inside hemisphere is sleeping and outer is working. This outer hemisphere helps fishes to get air and safety from predator. Also help in continuously motion. So when fishes snoozing these are in asymmetrical sleep position.

When calf a little baby of fish need to keep itself in continuously motion for two week so that when they sleep. It needs ait too it goes to asymmetrical sleep.

Other Marine animals also sleep asymmetrical position. They keep body horizontal and one of their hemisphere is working and nother sleeping.

Birds

Birds also sleep asymmetrically. They have same phonomena of sleeping. Their mind also awaking and some part are sleeping.

For example ducks sleep in group but these are also sleep unisymetrically. One eye of duck is opened and second one is sleeping. So some part of their mind is sleeping and other part are awaking. That's why duck Chase us more during night time rather than day time.

Some birds fly high and keep migration from one side to another side. So they flying continuously day and night. During night when they sleep. They are sleeping asymmetrical. One side of birds is with opened eye. So one hemisphere is working and another sleeping.

But birds less sleep they sleep only 8% as compared to other animals. So this is big tolerance in sleep and its balance.

What about human?

Yes we also sleep asymmetrically espically when we are in new place. When we are new place at the mid of night or whole night a fear in our mind dose not allow us to sleep well. We awake on little movement and get conscious. When we are sleeping one hemisphere of our mind is sleeping another is awaking. It alert us whole night.

First night effect

In 2016 scientist give a discover a first night effect. When we are in new place or working in lab and have to sleep their first time we sleep asymmetrically. Some parts of our brain waking another hemisphere is sleeping. That's why we wake up on little sounds. We react fast and it spoil our sleep.

Same happened with us in hostel rooms. We can't sleep perfectly. Moat of time poor sleep. In a mind a strange thing continually moving would let us die etc.

So that is true our mind is not sleeping at all . Some parts of mind working and awaking to alert us. Our right hemisphere is deep sleeping and our left hemisphere is awaking not sleeping deeply.

Thanks! for reading and i hope you got the answer. If you got the answer than leave a comment and push on like button. Thanks you very much :)