Bicycling South Africa's November issue promises to reveal '15 ways cycling makes you a better lover' and sends a reporter to have his willy wired up to measure penile blood flow during cycling.
Bicycling South Africa is part owned by Rodale, the publisher of Bicycling in the US, and by Touchline Media in South Africa. Touchline also publishes South African issues of other Rodale titles such as Mens Health, Sports Illustrated, Runners World, and Golf Digest.
A reader survey for the sex issue "confirmed what we suspected all along," said Bicycling South Africa editor Sean Badenhorst.
"Regular cycling helps improve physical appearance, which gives people more confidence both in the boardroom and the bedroom. And greater confidence leads to more fulfilling lifestyles. And face it, sex is a prominent lifestyle activity.
"Some reader responses in our survey surprised us. Put it this way, we're expecting more adults to be asking for bicycles this Christmas."
But worried about erectile dysfunction? Bicycling tackles the issue, ahem, head on by sending one of its journalists to the German laboratory of Dr Frank Sommer, the professor of urology who tests penile blood flow for saddle manufacturers such as Specialized and Selle Royal.
This isn't the first time a US journo has put his willy on the line for saddle research. In 2004, Roy Furchgott, a writer for Outside magazine, had his penis wired up by a lab assistant working for Sommer at Germany's University of Cologne Medical Centre.
And Rodale's Men's Health has also reported that cycling is good for the bedroom.
Joe Kita, the author of the infamous 1997 report on cycling and impotency in Bicycling, wrote in Men's Health that cycling increases sexual performance because of:
GREATER BLOOD CIRCULATION: One key to sexual health is blood flow to men's and women's sexual organs. Cycling helps build the cardiovascular system, which improves blood flow throughout the body and especially to the penis.
HEIGHTENED SEX DRIVE: University of California at San Diego researchers found that men who followed a regular exercise program reported a 30% increase in frequency of sex with their partners and experienced 30% more orgasms. They also fantasized more about sex, kissed and caressed their partners more. INCREASED SEXUAL ENDURANCE: Because cycling improves your cardiovascular conditioning, cyclists don't tire as quickly during lovemaking. STRONGER SEX MUSCLES: Cycling improves your legs, buttocks, and lower- back muscles, all key muscles used during intercourse. BIGGER SEX ORGANS: Cycling can reduce fat that builds up around the base of a man's penis. In essence, since this fat reduces penis size, cycling can make the penis look as large as possible. SEXUAL APPEAL: A recent survey by Men's Health magazine revealed that women find a man's rear-end and legs the sexiest parts of his body. Cycling helps tone and strengthen these parts, increasing a man's physical appeal.
MORE ENDORPHINS: Regular exercise increases the body's release of endorphins, which creates a feeling of heightened well being. This release of endorphins has been shown to increase sexual arousal or even orgasm in women.