by Jack Winston
For thousands of years, humanity has been looking for a source of eternal youth. According to legend, he not only restores vitality, but also turns grumpy old women and grumpy old men into happy, carefree creatures. As our great-grandfathers believed, together with youth, the joy of life and optimism return to a person.
Today we know the converse is also true. A person who walks through life in a good mood and has a lively mind also maintains good physical health.
