Tony Blauer once jokingly (I think) suggested that Kyle Maynard's company No Excuses should be called "Shut The Fuck Up" instead. GIven what Kyle has fought through in order to get where he is, I don't think that's an unreasonable idea.
Here's another one. This kid has ONE leg, yet manages to train Muay Thai. Think about that the next time you don't feel like dragging your ass down to the gym.
Shameless stolen from Wim Demeere's Blog