Why are you getting sleepy?
At night, people inevitably become sleepy. This is because not only the body but also the brain is tired and wants to rest.
Your body and brain are trying to rest and prepare for tomorrow.
However, it is not only when we are tired that we get sleepy. It is also possible to be sleepy even when you are not very tired. For example, we often feel sleepy when we are bored, listening to uninteresting stories, or doing the same thing for a long time. This is because there is not much stimulation and the brain is less active.
The same is true of the tired and uninteresting story of how studying arithmetic makes you sleepy. However, in this case, if you study harder and enjoy studying arithmetic, you will probably not get sleepy.
For your home
When we are asleep, the reticular formation of the brain is said to be at rest. At this time, all parts of the brain and spine become less active.
