I've always had a bit of trouble with this. The relationship in some arts is somewhat father/son (probably more true in the older TMA's), part mentor/mentee (or coach/coachee). In some areas (likely including MMA and boxing) there's a different dynamic. I think the filial sense is somewhat driven by the Chinese and Japanese cultures many of those arts spring from. It can be problematic when it gets out of hand, and can be very supportive and useful when it works well.Yeah. brothers would be a better dynamic of family. Than father and son.