If you’re finished producing offspring (or you’re sure you don’t want kids), consider investing in permanent renovations at the sperm factory.

“The risk of a contraceptive failure can be a big source of anxiety for some men, especially those who’ve had a birth-control disaster—or a scare—in...

Cardio. Cardio. Cardio.

According to Ryan Berglund, M.D., a urologist at the Cleveland Clinic, bloodflow is the key to a healthy erection, and there's nothing that encourages bloodflow like aerobic exercise. Not only does it keep you in shape, it builds the body's nitric oxide, which helps ...

Sorry if that photo made you yawn just now. Actually, we're not sorry—because as far as your body’s concerned, yawning and getting an erection are practically the same thing.

They’re both controlled by a chemical called nitric oxide. Released in the brain, it can either travel to the neuron...

Your penis needs as much shut-eye as it can get. Every night while you sleep, you have between three and five hour-long erections. You probably noticed this phenomenon the last time you had to pee at 4 a.m.

Those erections are not there just to make life interesting for your bedmate. They w...

In a study conducted at the University of Kentucky, researchers found that when asked to rate their sex lives on a scale of 1 to 10, men who smoked averaged about a 5, while nonsmokers rated theirs a 9.

One reason is that smoking is a known cause of impotence, and there’s some evidence that...

Besides taking up residency at a monastery, having diabetes is the quickest route to a lifetime of celibacy.

In fact, more than 50 percent of all men with diabetes are impotent. The disease hits the penis with a double whammy. It accelerates the process of arterial disease, and it slows the...

Low testosterone doesn't directly affect the mechanisms involved in your erection, but it does affect your libido, making it harder to get turned on—and harder to get, well, hard . If you notice an uncharacteristic drop in your sex drive—or any of these symptoms of low testosterone—you m...

In one recent study, researchers found that men who walk just 2 miles a day had half the rate of erection problems of more sedentary men, says Dr. Goldstein. (Twenty minutes of jogging or 30 minutes of weight training will work, too.)

Deposits that clog or stiffen penile arteries can also w...

Though few things are worse for your erection than a cigarette habit, coffee can actually help you out below the belt. A study by the University of Texas Health Science Center at Houston found that men who consumed the caffeine equivalent of 2-3 cups of coffee per day were less likely to suffer f...

It’s common for men who start having affairs to stop having erections. So common, in fact, that doctors who treat erectile dysfunction often ask their patients if they’re getting any action on the side.

Unless your wife knows about, approves of, and participates in your new sex life—in whic...

According to WedMD , research has shown that foods bad for the heart are also bad for the penis—which makes sense, since the heart and penis both depend on blood flow to function properly.

The penis is the most temperamental part of a man’s body. When you want it to stay hard during sexual activity, it goes soft. Then, when you finally manage to sustain an erection, you end up ejaculating too quickly. It responds poorly to alcohol, even when you’re in a sexually arousing situation....

Did you know that a cock ring can help you maintain an erection? This O-shaped toy fits around your penis and helps keep blood in the shaft, where you want it. A cock ring also helps prevent venous leakage, a form of erectile dysfunction where blood flows to your penis, but has trouble staying th...