A guy may talk a big game and wear jeans that are tighter than Adam Levine's, but that doesn't mean he has what it takes to keep up with you in the sack...or get you knocked up when you're ready. You can glean a ton about a guy's libido and reproductive health just by eyeballing him. Harry Fisch, MD, author of Size Matters, reveals how to read the clues.
Clue 1: He's Trim Around the Middle
You've no doubt heard that a dude with a gut is more likely to keel over from a heart attack later in life, but it's also a bad sign in the sexual realm. Testosterone is broken down more quickly in belly fat. So that big stomach? It's literally sucking him dry of the stuff.
"Testosterone is the gas that drives the car," Dr. Fisch says. "If it's low, he's going to be low on gas. He'll be tired, he's not going to be able to exercise very much, he's less likely to be in the mood, and his fertility will be lower because a guy needs a certain level of testosterone to produce sperm." Find out what love does to your diet.
Clue 2: He Parties Smart
Smoking and heavy drinking have the same effect on a guy's mojo as a Rosie O'Donnell striptease. "Smoking constricts blood vessels, which means there's less blood flowing to his penis," Dr. Fisch says. This may cause him to have problems getting - and maintaining - an erection. Downing more than three drinks also can leave him limp because alcohol is a central-nervous-system depressant, which once again, limits blood flow to his penis. So a guy who knocks back lots of cocktails? He's probably not going to be the life of the party in bed.
Clue 3: He Takes Just Long Enough
You don't need a PhD to know that a guy who comes too fast can put a damper on your sex life (anything less than 2 minutes is considered premature ejaculation). But a man who takes forever to peak despite being hard also may be cause for concern. For one, he may be giving himself a hand too often. "Some men masturbate so much that they know their trigger points and it becomes more difficult for them to come inside a woman," Dr. Fisch says. It could also indicate that he's on an antidepressant or anti-anxiety medication, which can cause prolonged ejaculation.For more Cosmopolitan.com, check out these links:
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Reprinted with permission of Hearst Communications, Inc.