For everyone who thinks Muay Thai will make you a cripple by the time you're 30...
http://www.youtube.com/watch?v=9MbIIjXKTd8
To paraphrase the japanese:
Started training at 15 years old
Pro debut at 18 years old
Champion at 25 years old
Video says his current age...
Still trains actively, loves it and will never quit...