Healthy Lifestyle Tips : Some people are over-worked and have ill-health. But most people are under-worked and have ill-health. If you had lived 200 years ago, you would be doing at least 20 times more physical activity than what you are doing right now. You would have walked everywhere and would have done everything with your hands. If you were doing that much activity, I would have told you to take a break and get some rest. But for most people today, the body has not been used enough. In terms of physical activity, many 20-year-olds would not be able to do what a 60-year-old was doing 100 years ago. That means we are just weakening humanity. You can keep this body well only by using it. The more you use it the better it gets.