I second pretty much everything said by ciphergoth in this thread.

I think it's clearer if the word "masochism" is reserved for sexual masochism. While some items on Phil's list might be related to masochism, but with others, the link is more tenous. For instance, masochism and self-defeating behavior are really different phenomena. Spicy food is probably closer than something like exercise or videogames.

Masochism also also has some psychological characteristics that are different from anything on the list, such as subspace).