It is well-known that great men who have left their mark on history, such as Napoleon and Edison, were short sleepers, but on the other hand, the legends who have been active in recent years are long sleepers. Shohei Otani usually sleeps at least 8 hours a day, and 12 hours a day on holidays, while Sota Fujii is a proponent of "sleeping in" and sometimes sleeps 10 hours a day. Geniuses also have unique sleeping styles. There are also stories that the great men mentioned above actually took naps in secret during the day, so the important thing is to have your own sleeping style and the quality of it, taking into account your age, physical condition, activities, and even sleeping habits.
During REM sleep, the human brain reprocesses the information stored while awake. It is like optimizing a computer, erasing unnecessary information and emotions. It is believed that dreams are seen at that time, and the reason why the setting of a dream is unexpected or the context is strange is because of a bug that occurs when processing information. If you feel like you haven't been feeling well lately, it is possible that the reprocessing of information is not going well, so the quickest way to deal with this is to improve your sleep environment. You can also use indirect lighting to adjust the light in the room to suit your sleep, change into pajamas when you go to bed, or rely on sleep tech. And by doing it consciously, it will become a habit of your sleep ritual before you know it. Sleep is something you do every day, so make sure you take good care of it.
