I imagine though that this effect only holds true for *heterosexual* males: as a gay male runner I don't give a rat's ass if a woman sees me run... but if a *man* sees me run, then A) I get competitive, and B) if he's fit then I try to put forward my best efforts while trying to look calm, cool and collected... the only time I'd care is if it were my mom watching, then I'd give it best effort