First of all, from a professional point of view, pillows are all prepared for you to sleep comfortably in the hotel. When I was a child, people didn't care much about pillows. For example, when I was a child, I didn't have a pillow. I used old clothes to cushion it, as long as it was soft and easy to use. I have never considered whether they are healthy or not. There is scientific basis. People grow up and read more books before they know that pillows have these functions. First of all, the height of the pillow needs to be between 6-8 cm.
The hotel prepares four pillows mainly because some hotels have soft mattresses, and most of them are guests on the way. They need to relax their legs after walking or a busy day, so they put their legs under their knees and bend them slightly to relax.
There is also insecurity outside, so you need something to help you be safe. Holding a cushion is very comfortable, so that the quilt will not slide everywhere, which is good for friends who like to play with quilts and will not catch a cold.
Do you have a cushion? That is to adjust the height of the pillow for different people. Some people need to add a cushion for obesity, so that the height will be enough, sleeping on it will be very comfortable, and the spirit will be good the next day.
Sleeping is a big deal. Only with a good sleep can we have good energy and treat and deal with problems in our work. Without a good rest, my mind is full of gangsters all day, and my efficiency is very low. Everyone has heard of decibels, which means how many decibels you can call the police.
May we have a good body, a good environment and a good house. Let's fight.