Why do we need to sleep on a pillow? One-third of our time is spent sleeping, and pillows are very important to our health.
If we do not put a pillow under our heads when we sleep, the head's position will be lower than that of the heart.
This will increase blood flow to the head and the blood vessels in the head will expand.
After a few hours, we will become dizzy and our eyelids will be swollen. Needless to say, we will not sleep well.
With a pillow under our heads, our heads and chest are slightly elevated, which will slow down blood circulation in the lower part of our body and reduce the burden on the heart. It will also help us breathe better.
It is important to take into consideration the height of a pillow. If a pillow is too high, our neck muscles will be stretched and will not be able to relax. We will end up having a headache or neck pain. We should use pillows that are of medium height and softness.
What are the advantages of reforestation? Reforestation can improve the climate and environment of a region.
