It shows how important it is to eat foods with balanced nutrition, to spend life without isolating, and to ensure sound sleep.
Though they seem to be simple reasons, it's difficult to satisfy them in contemporary society. Imagine the case that there are enormous unhealthy foods which taste much better than balanced foods, the case that there are a lot of people whose relatives are dead or living away from them, the case that there are people who are devoted to games or SNS without sleeping. How can we control desire to go unhealthy life?