Currently, more than 300 people are murdered annually in Japan. In the 14th century in the West, 40 people were murdered per 100,000 people. However, by the end of the 20th century, this had decreased to 3 people. In terms of per 100,000 people, Japan has 0.25 murders. According to criminal anthropology, in primitive societies, about 15% of society members were killed by violence. When serotonergic fibers in the forebrain of monkeys are removed, aggressive behavior increases. The lower the amount of serotonin released, the more likely criminals are to become antisocially impulsive. The exclusive mentality of criminals who do not accept others is rooted in an unstable self. Basically, living things prioritize protecting their own lives over attacking others. It can be said that the mechanism of human serotonin secretion was created during the process of evolution to emphasize defense.
Good quality sleep is an important factor in improving performance. When considering sleep, serotonin is an important factor. Increasing the amount of exercise promotes the secretion of serotonin. At night, serotonin becomes melatonin, which promotes sleep. There is a mechanism by which exercise promotes the secretion of serotonin, which results in good sleep. Humans are designed to be active with the sunrise and to become less active with the sunset. The circulation of serotonin and melatonin creates good activity and sleep. Serotonin is an awakening hormone that is secreted in the morning and improves brain function. Melatonin brings about good quality sleep. If you work an early morning shift, you can achieve this good circulation.
People who can mass-produce ideas have a mechanism for making their own ideas. Discoveries that come from chance are called serendipity. To make these discoveries more frequent, you should go to places that it is easy to make them. For example, if you look around the shelves of books in fields unrelated to your work in a bookstore, serendipity is more likely to occur. It is wise to let a little randomness into your life so that serendipity can occur. If you can balance exercise and sleep and regulate the secretion of serotonin, you will be able to produce more stable ideas. If serotonin is secreted appropriately, you will be able to perform stable work and produce ideas. This is why exercise and sleep are important.
