On 12/07/2015 10:23, Nick wrote:
On 11/07/2015 23:26, Judith wrote:
On Sat, 11 Jul 2015 07:11:20 +0100, Bod wrote:

"People who cycle regularly in mid-adulthood typically enjoy a level of
fitness equivalent to someone 10 years younger and their life expectancy
is two years above the average.

On the other hand

For men, the health benefits of bicycling may involve a troublesome
trade-off.
While riding a bicycle burns calories and improves cardiovascular
fitness, too
many hours on a bicycle saddle can compress the artery and vital
nerves leading
to the penis.

The result? A risk of numbness, pain, and erectile dysfunction.

A male cyclist can place a significant percentage of his weight on his
perineum, an area between the scrotum and the anus where the nerves and
arteries to the penis pass. This pressure -- and a narrow saddle seat
-- can
injure the arteries and nerves.

"The earliest warning sign is numbness or tingling," says Irwin
Goldstein, MD,
director of San Diego Sexual Medicine.

Even a young man may lose the ability to achieve an erection, says
Goldstein


I think road bike seats got much better in this respect about 10 years
ago. I don't get numbness like I used.

This later report did not find a relationship between ED and cycling.

http://online.liebertpub.com/doi/full/10.1089/jomh.2014.0012



Not that it matters. Cyclists are such a target for ridicule no woman
would be interested.