Originally posted by Amir R. Pakdel
Hey Wabbit
What's wrong with asking if they can work in their sets with you? At my local gym, it can get pretty crowded sometimes and between sets you need half or a full minute to get the lactic acid flowing to get into your next set.
And as for women on bikes... if there is a male out there that looks down on them then he has some serious issues. I'd ignore a super pro male cyclist over a women on wheels any day! 
I don't mind, it's just that some of the real muscle-bound gym types have this attitude thing, as if you're just taking up useless space and preventing them from pursuing the perfect body. And I don't like having my rhythm disrupted. Once, I let a guy do sets on the ab machine- it turned out to be a set of 1000! Next time, forget it! But if I'm taking a break, fine, it's just that I don't like to stop as much as they don't like to stop.
As for cyclists, I find that a lot of men are impressed when they see a woman on a bike and look very approving (especially on hot days when I unzip, LOL). But there are always snotty jerks in any sport, and I've found they are snotty wo both sexes.