Trying to figure out which muscles to concentrate on in the gym? Motivate yourself by focusing on building up the body parts that make women go all squishy. Before you hoist another dumbbell, you should check out this guide to the finer points of the male body, from the female point of view.

1. SHOULDERS No woman can resist the lure of a powerful upper back—especially when it tapers down into a sexy V that points suggestively to equally well-formed buttocks. Bonus: Buff shoulders generally make you seem taller and give the impression that you could rip another guy in half if he so much as glances at us. “If a guy looks like he can barely squeeze through the door frame, I know I’m in good hands,” says Liz simply. 

Exercise: To maximize your upper half, side laterals and military presses are a magical combo. (An upright row or two wouldn’t hurt, either.)

2. BICEPS This is the second most impressive bulge you’ve got (first being your massive brain, of course). What we like is the kind that jumps to attention when you knock back a Bud. “As long as he’s got strong, defined arms, a guy can have chicken legs for all I care,” says Gabrielle. 

Exercise: With that in mind, pump up your guns with slow, controlled biceps curls.

3. ABS We especially appreciate a ripped middle because it’s our little secret. Oh, sure, on beach days and at the occasional hot-tub fest we have to share, but for the most part your rock-hard belly is ours alone. “I once dated this guy who had the most incredibly sculpted stomach,” recalls Allison. “He’d slink around the house in these beat-up jeans slung really low so you could see his hipbones. I can’t remember a single conversation we ever had, but I will never forget those abs.” Exercise: To inspire such fantasies, work your middle from as many angles as possible. Try reverse crunches coupled with alternating sets of oblique and standard crunches.

4. GLUTES To put it into a simple mathematical formula, nice tail + faded 501s = sexiest guy alive. “I could stare at those little indentations on the sides of my boyfriend’s butt for hours,” admits Rachelle. “I’ve actually been late for work because I was watching him walk around naked.” Exercise: To make a great impression (or two), deadlifts are the way to go. Forget who’s looking. For best results, you’ve got to really squeeze at the top of the lift.

5. CALVES Please don’t waste a whole lot of time trying to bulk up your thighs on our account. If you’re flaunting them, odds are you’re wearing a Speedo (and unless you’re part of the U.S. Olympic swim team, don’t). But a whittled pair of calves? Now you’re talking. “I grew up near the beach, and all the surfers had killer calves from running in the sand,” drools Danielle. “Legs like that can still make me melt.” Exercise: To add power and purpose to your lower limbs, do alternating sets of single-leg calf raises off a stair or bench.