I have a hypothesis that life expectancy increases by the amount of time we spend exercising: if we walk for 10 minutes, our life expectancy increases by 10 minutes. Perhaps this is true. Exercise is medically and completely proven to prevent not only heart disease, lifestyle-related diseases, and stroke, but also cancer, dementia, improved brain function, back pain prevention, immune system enhancement, and falls. Since luck is about catching luck, increased brain function is involved. From exercise to improved brain function, and then catching luck. The human body has an expiration date, but that expiration date can be extended. The human body is a mysterious world.–