Appetite, pain and money: How does an NBA player know when to retire?

Hall of famer Robert Parish played more NBA games than anyone in history. He says stepping away from the league was an easy decision to make

There are few professions in which your career will almost certainly be over by the time you're in your late 30s. Yet, in professional basketball this is the case. The game is just too fast, too physical for someone who has lost a step. It's tough to swap the excitement and money for a more humdrum life. Some in professional sports, including Hall of Fame quarterback Steve Young, have even likened retirement to death".

So, how do NBA players decide when it's time to go? It's helpful to look to the man who played the most games in league history (1,611 in the regular season and 184 more in the playoffs), Boston Celtic great and four-time NBA champion, Robert Parish. If anyone knows, it's him.