I heard a couple of girls in my class the other day expressing surprise that the boys in one of their other classes actually preferred the appearances of a girl who was a little chunky over the much more slender girl they thought looked better.
I didn't jump into this conversation, because honestly it wasn't my place and it would have been highly inappropriate, but those girls really don't understand the male mind at all. Guys like a cute face, boobs, and a butt that shows off the higher hips to waist ratio of the female body. There's a reason Jennifer Lopez is famous and it's not because she's a talented musician or actress. I really think many women underestimate just how lenient men are in every other aspect of the female appearance when they judge your appearance (which all straight men are going to do regardless of their outward progressiveness). Your stomach not quite flat and toned? Most men really don't care, and the ones who do are complete assholes. And idiots, because did the guy not notice the fun parts? What's wrong with that guy?
And seriously, guys like big butts. Why do you think strippers always bend over in their acts even before they've taken their clothes off? It's because it makes their butts look bigger! Sir Mixalot was entirely correct in his assessment, although sadly I'm not sure why he wanted to bring his anaconda into it. Reptiles and sexy posteriors really should not be combined.
Now, I'm not saying go out and eat yourself into one of those tubs of lard who posed naked for Spencer's gag birthday cards. Men like healthy too. I'm just saying that if you're worried about five or ten pounds because you're worried about how the opposite sex will look at you, then you're worrying over something stupid.
As for the guys, it's an entirely different story. You look like crap unless you have a flat stomach and broad shoulders. In fact, I'd say men have a much narrower range for the ideal body type and physical appeal drops off more rapidly as you veer from that range than it does for women. And yes, since I have neither strong, broad shoulders nor a flat stomach, I'm including myself in the group that looks like crap. I just don't care. My wife is half blind. I'm pretty much set.