Gym or light ground exercise say 4 abt 10 to 20 minutes & walking as more as possible, along with strict control over food & carbonated water drinks, junk items & other health deteriorating toxic elements is suggested 4 People above 40, if a person is able to retain health in good condition, doing above, whatever d age, he will remain fit & healthy. He can do his work on his own, without having 2 b dependent on others. Thus fitness is not all abt competition & looking food, more than that it is health rejuvinator.