When Men Are Young ...

... they're mildly, well, obsessed with sex. Why is that? Men In their twenties are interested in things they can touch and feel. Bodies are something to derive pleasure from. As men age, though their testosterone production - along with their sex drive - can decrease, and many begin to notice a woman's brain before her bra size.

So, what exactly is going on in a man's mind as he makes the journey from his twenties to his forties? To get the scoop, 98 men were asked eight intimate questions to see what a difference a decade (or two) makes - in a guy's brain and his bed.

1. WHAT'S THE NUMBER 1 QUALITY U LOOK FOR IN A POTENTIAL GIRLFRIEND?

in their 20s ...

"she's gotta be good looking"

"good teeth"

"her record collection should put up a decent fight against mine"

"the ability to take a joke. Then u can make fun of her butt and she'll give it right back to you"

in their 30s ...

"passion for who she is, for what she wants in life and in how she treats me and others"

"humor. A lifetime is too long to be bored"

"she has to be intelligent. Dumb girls are a dime a dozen and no fun. If I want dumb, I'll just look in the mirror"

in their 40s ...

"a sense of humor. If she doesn't get the joke, it's not going to work"

"can she stand to live with me?"

"grit, if a woman doesn't have a spine, why bother?"

"being able to see the good in people no matter what the bad stuff is"

2. FAVORITE BRA SIZE

in their 20s ...

"a nice C"

"a large C"

"after careful analysis, I have determined that 36C is the optimal size"

"size 38C. It's perfect!"

"D, baby, D!!"

in their 30s ...

"B is a nice handful. But excitable nipples are most important"

"B+"

"B or C. I don't want to get hit in the head during sex, but I don't want 'em smaller than mine"

"A, I like them manageable and compact"

in their 40s ...

"I take the position women take with me, thank God: it's not the size, it's how you use them"

"smallish- is that A or D?"

"I'm like Mies van der Rohe: less is more"

"her breasts, whatever size, are beautiful"

3. HOW OFTEN WOULD YOU LIKE TO HAVE SEX?

in their 20s ...

"once a day"

"twice a day. Is there a better way to wake up? A better way to go to sleep? No"

"hourly"

"when I have a girlfriend, four times a day or more. When I'm single, four times a week or more"

in their 30s ...

"I'd like the option of having sex everyday. which would require a relationship"

"Every other day, now that I'm older"

"Four times a week"

"I'd like to give my woman and orgasm seven days a week"

in their 40s ...

"four to five times a week. I'm not a s virile as I used to be"

"I'm married, so one to three times a week is great"

"twice a week"

"my 4-times-a-day days are over, but four times a week is a happy sum"

4. WHAT'S SO GREAT ABOUT WOMEN?

in their 20s ...

"breasts"

"their softness"

"their bodies"

"the entire contrast between them and me: the smooth skin, the curves, the hips, the breasts"

in their 30s ...

"they give birth"

"they inspire me and make me step up to the plate. I want to be fresh and exciting for them"

"what's not to love"

"that you can never tell what they're thinking, even when they swear they're telling you. That's also my least favorite thing"

in their 40s ...

"it would take an hour to list the chapter headings .... "

"I know I will never understand them, which is enough to keep me fascinated. Then there are the breasts, too"

5. WHAT ARE THE BEST AND WORST THINGS ABOUT WOMEN YOUR AGE?

in their 20s ...

"best, no wrinkles. Worst, they like older guys"

"best, they're still wavering between wild, drunken one-night stands and the looking-for-love stage. Worst, I don't know which one I'm getting"

in their 30s ...

"they're powerful, they truly wear the pants in the universe, but they're super picky. Maybe that's why they're still single and always complaining about it"

"they're sexually peaking, politically aware, relatively secure ... but also conflicted about career and childrearing"

"best, they're confident and stable. Worst, there aren't enough of the good ones left"

in their 40s ...

"the best is that they're wise. The worst is that this means they know all the tricks"

"best, they no longer base their desires on what some guy thinks. Worst, some are defeated, like the parade has passed them by and it's never going to get any better"

"best, they know a lot about what a man likes during sex. Worst, they know a lot about men in general, too"

6. WHAT ARE THE BEST AND WORST THINGS ABOUT SEX AT YOUR AGE?

in their 20s ...

"best, in my prime. Worse, living with my parents"

"I don't have a problem getting an erection. But there's not enough sex available"

"best, things still seem new. Worst, STDs like HIV"

"best, being able to have sex over and over again. Worst, my girlfriend doesn't share this quality"

in their 30s ...

"best, you know how to do it. Worst, you have to do it after the kids are asleep"

"best, you know what you like. Worst, you fall into a routine"

"sex is more spiritual, but I'm slowing down, and so is my sex drive"

in their 40s ...

"the best thing is that I'm no longer a raging hormonal disaster. The worst is that I just keep thinking, I'm one year closer to death"

"the worst is when a woman gets two big handfuls of my love handles"

"everything's better"

7. THE ONLY THING BETTER THAN SEX IS ...

in their 20s ...

"more sex"

"I'm drawing a blank"

"playing an amazing (concert) set onstage to a medium-size but responsive crowd and then screwing like James Brown on Viagra immediately afterward"

"eating a pastrami sandwich while having sex"

in their 30s ...

"better than sex"

"the piss you'd been putting off while drinking at the bar"

"laughing with friends and family"

"sex with someone you love .. ? sorry, cliche answer"

in their 40s ...

"raising kids you made from sex"

"gelato"

"love"

"happiness, wisdom and eternal life... but only if there was a clause in the contract stipulating you could still have as much sex as you want"

8. WHAT DO YOU KNOW ABOUT SEX AND LOVE NOW THAT YOU DIDN'T KNOW WHEN YOU WERE 18?

in their 20s ...

"sex is more that orgasm, and love ain't easy"

"I was a virgin at 18, so now I know what sex is like"

"I know it's better to tell a woman that you love her than to keep it to yourself"

"you can tell a woman is having a really good time in bed when you can feel things clench up"

in their 30s ...

"at 18, I never knew that women like sex as much as they do. I thought guys were the only ones who wanted it"

"I know now that you can fall in love over and over again. Just because one meaningful relationship ends doesn't mean there won't be another one down the road"

"when it comes to sex, women don't really want what you see in a porno movie- thank god"

in their 40s ...

"at 18, I thought I knew everything. At 40, I'm starting to understand that I know nothing"

"sex is easier to get and love is harder to find than I imagined"

... what I read