I can only pick up martial arts "losers", or really clumsy people
The other day at free traiing there were two iaido blokes training on the wooden floor part of the hall, one of 'em had a massive scar all the way around the side of his face going across the top of his head to the other side of this face. I figured he was clumsy... sure enough, his iaito went flying a few times <gulp> and he tripped and fell over his hakama and went down at least once. Then there was the issue of a pink dogi top.... So on entering the hall after water breaks was very careful not to get skewered.
Oh, and spotting bullshit in non-MA people (business, work) is another fun skill, sad though it may be that this is necessary.
MA is fun!