How His Childhood Eating Habits Affect His Boner

As you're probably well aware, there are quite a few reasons why a guy might not be able to get hard. From his relationship with his mom to weird masturbation habits, you might think you've heard it all—but you would be wrong. His erection troubles might also be to blame on how much sugar he ate as a kid, according to a recent study published in The Journal of Sexual Medicine.

For the latest boner-killing study, researchers gave newborn male rats water spiked with different dosages of fructose (the type of sugar found in fruit). The control group drank regular water, a second group drank water with five percent fructose, and the third group drank water with 10 percent fructose. After eight weeks, researchers tested the rats' blood-glucose levels, testosterone levels, and erectile function.

Are You a Sex Addict ... or Just a Guy?

Here's a shocker: Men love sex. Thinking about it, watching it, doing it—your day is probably sprinkled with sexual urges. How often? Ten, 20, 50 times a day? Is once every 10 minutes a reason to start worrying? Where’s the line between having a sex addiction ... and just being a living, breathing guy?

Studies have shown that as many as 1 in 25 people report an uncontrollable obsession with sexual thoughts, feelings, or behaviors. But whether sex addiction is even a real thing is up for debate. As it's clinically known, hypersexuality didn’t make the cut to be included in the newest version of the Diagnostic and Statistical Manual of Mental Disorders (DSM), the bible of diagnosing mental disorders. But if you were to ask Tiger Woods, a voracious sexual appetite is  a very real thing.

Sitting on Your Butt All Day Is More Risky Than Being Obese

Consider this your daily reminder to get off your bum: Being sedentary may be twice as dangerous as being obese, according to a new study from the University of Cambridge.

Researchers tracked over 334,000 people for 12 years and compared activity levels and weights among the subjects who died during that time. They calculated how many deaths could have been avoided if all the participants had been more active versus at a healthy weight, and determined that physical activity could have saved twice as many people as weight loss.

6 Ways You Kill Her Orgasm

She’s right on the edge of ecstasy, and then you do something dumb in bed that derails her pleasure, throws her off her game, and ruins the rest of the night. Some maneuvers may seem innocuous, but they actually distract her from her ultimate endgame: achieving orgasm. Avoid these six sex moves at all costs.

(And while you're at it, look out for the 5 Signs You Might Be Bad in Bed—and discover how to change both of your sex lives for the better.)

This is Why You Don't Have the Body You Want Yet

I've heard stories  about athletes who enhance their performance by sleeping in high-altitude chambers, drinking kale smoothies every four hours, getting deep tissue massages every day, or training with equipment that looks like NASA's castoffs. Great for them. But for most of us, just finding 20 minutes a day to exercise is an impressive feat.

That's why I remind the average guy to keep it simple. You don't need Space Age equipment when a barbell works just fine.  In order to make continuous progress and stay healthy, I've learned over the years that you just need to follow four principles. They're not earth shattering or original, but they work. Follow them, and you'll set yourself up for a lifetime of fitness success.

Why Men Suddenly Develop Pregnancy Symptoms When YOU'RE Expecting

This article was written by Ali Eaves and provided by our partners at Men's Health.

It's nothing compared to what women's bodies goes through—but men experience hormonal changes when their partners are pregnant, finds a new University of Michigan study. Researchers tested the hormone levels of first-time fathers-to-be and found that their testosterone dropped as the baby grew.

Don't panic—we're not talking clinically low T levels, says study author Robin Edelstein, Ph.D. But the changes could be just enough to subtly influence his personality, like making him more nurturing and devoted to you and your future child (not such a bad thing).

7 Masturbation Moves to Try In the Shower

You shower every single day—and it's time to start taking advantage of that naked alone time. We talked with Astroglide resident sexologist Jessica O'Reilly, Ph.D., author of Hot Sex Tips, Tricks and Licks, to get some super sexy ideas for really steaming things up in there.

1. Play with the Temperature
"Run a warm shower, and press your frontside against the cold wall while touching yourself," says O'Reilly. "Let your clitoris respond to the sensations of the cool wall and the hot water in succession."

Can Lemon Water Really Help You Lose Weight?

Celebs such as Gwyneth Paltrow and Real Housewives of New Jersey star Dina Manzo guzzle hot water with lemon as if the liquid was bottled at the Fountain of Youth itself. They're certain it aids in weight loss—but is the claim too good to be true?

"Hot water with lemon in and of itself does not cause any actual weight loss," says Alissa Rumsey, R.D., a spokesperson for the Academy of Nutrition and Dietetics. However, if this drink is replacing a beverage that is higher in calories, like coffee with sugar or fruit juice—and that results in a calorie deficit—then it can help you lose weight.