According to a recent study, biking can make women's genitals less sensitive.
Now I'm in full support of anyone -- of any gender -- who wants to get a little bit more exercise in their daily routine. I'm also in full support of attempting to cut down on automobile emissions by using a variety of alternative transportation methods.
But women, please, leave the bikes at home. Just, you know, go for a walk. Or car-pool. Or ride the bus or something.
Biking: It's just not worth it.