Your parents lived in a relatively unpolluted world. You do not. Each year, if you look at the statistics, the number of calamities is increasing. The whole of Hong Kong had to wear masks because of influenza. Tsunami one happened. You are fooling yourself if you believe that you do not need to be fit and strong and healthy. For long-term health, your mind needs to be relaxed and stress free. Stress today is little understood. It causes much much more harm to your long term health than you can believe. You need to eliminate it. Modern sports, with an emphasis on competition and prowess, harm you. You should not do sports. You should not go to the gym. You need to lead a moderately active lifestyle, have plenty of milk and yoghurt in your diet, and have sexual release each day to remove the tensions that build up.