"[Geometer] H.S.M. Coxeter lived to the age of 96, working and lecturing right until his death. He attributed his long life to a strict vegetarian diet and he d

"[Geometer] H.S.M. Coxeter lived to the age of 96, working and lecturing right until his death. He attributed his long life to a strict vegetarian diet and he did 50 push-ups every day. He said, I am never bored." http://www-groups.dcs.st-and.ac.uk/history/Biographies/Coxeter.html http://www-groups.dcs.st-and.ac.uk/history/Biographies/Coxet...