this girl i know says she gets sexual pleasure from doing leg raises.
Because of that she doesn't like to do them at the gym because she's shy.
I don't understand what can be sexually pleasing about that exercice...
Probably for her creates some friction in the right place(s).
TAKU
If that was me I would probably do them all of the time and let people wonder what I was always smiling about.
i guess, i just never heard about that.
Probably if she removed the marbles from her underwear it would help
leg raises furiously
Probably in doing the motion, she squeezes her thighs together, and possibly crosses her legs. Combine that with whatever clothing she favors wearing, along with the way she might clench and relax the muscles in the area, and yeah.... friction could develop.
I think we need pics of said girlfriend to know for sure. Preferably her doing leg raises.
turducken - *leg raises furiously*
LMAO!!! 
this girl you know casually discusses this with you???
high five
If i were her, i would have the craziest set of haps and hip flexors known to man.
Actually I can confirm this is the case with more than the woman in the OP. Done as a last exercise for your SO, this should make for great PWO sex. I will say no more.
Just did 23 leg raises and nothing. OP, ask her how many reps before I bust a nut. I'm getting tired.
My wife says the same thing about a couple of different leg exercises. She gets a tingle and then it's on when we get home. Maybe it's due to increased blood flow to the area?
I remember once seeing a woman colonise the only bench in the gym to do high rep hip thrusts while several meat heads looked on waiting their turn (for the bench). I have a sneaking suspicion there may have been some sort of sexual overtones to that too.
DaddyRich - My wife says the same thing about a couple of different leg exercises. She gets a tingle and then it's on when we get home. Maybe it's due to increased blood flow to the area?
I'm a guy and I can do this. Have been able to since I was a kid. Showed my wife once, she was very impressed.
gusto - this girl you know casually discusses this with you???
*high five*
Poor bastard is "one of the gals."
Former client of mine said the same thing. The type where your elbows are supporting you. Captains chair I think its called.
tightening of the lower abs presses on the g spot from the outside.