I wouldn't even call it a coincidence, there are still plenty of old body builders alive and well. One is a governor. I think the video is a logical fallacy. The owner of that video adopted a position and is trying to persuade others to adopt the same position, based on a bad piece of reasoning. It does not qualify as a deductive argument. It could be considered probable but not certain. Remember that correlation does not mean causation and there are far worse things you can do to your body, like coming home from work and doing nothing. then add alcohol, tobacco, 100 pounds over weight and the stress from not seeing your penis for the last 20 years.

http://izismile.com/2013/03/06/a_100_year_old_bodybuilder_7_pics.html
here is Bernie Cooper at 62
http://i1079.photobucket.com/albums/w508/hummy123/berriniecooperat62.jpg