I guess it depends. Are you the kind of person who jumps into things with both feet and then ends up feeling overwhelmed? I am. For me, gradual changes are best, but of course, it really depends on your personality. There's no question that you'd benefit from the workouts. You just have to weigh that against longevity probability.
If you sometimes feel a little useless, offended or depressed, always remember that YOU were once the fastest and most victorious little sperm out of millions!