[~moo]

(First post. woo!)
Definately the Pelvic muscles. That 'V' shape is SO arousing to me. It kind of leads me to something I know I will enjoy.
Also, broad shoulders and chest, specifically being able to fit my head between shoulder blades and neatly on my partner's chest.
Oh, and small, tight bums. None of the 'big bottom' for boys. If his butt looks better than mine, there is an issue. XD

[Strabeary]

Nice strong arms, and lower back. So sexy!

[Nholland]

Nice big strong pecs mmmmm 

[WifeNMomma]

I think that V makes many women stupid, myself included. LOL I also like nice muscled arms and shoulders, and he has to have a nice bum, gotta have something to grab onto.

[InvaderTAQ]

The shoulders/ biceps. I have a thing for guys with strong muscles in those areas, which I guess explains why I've been in relationships with guys whose hobbies have included sword fighting, rowing, and currently an ex-baseball pitcher who goes to the gym and focuses on those points :P

After the comes the collarbones, and the little indent at the top of the sternum