Chunga hii maneno....
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.
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.
Even a young man may lose the ability to achieve an erection, says Goldstein, who pioneered an operation that restores blood flow and sexual potency in 65%-75% of cases.
How much riding does it take to put a man at risk? The Massachusetts Male Aging Study found that the risk was highest among men who cycled more than three hours a week.
The evidence that riding a bicycle can be harmful to men is very persuasive, but it should be kept in perspective.
"If someone comes in and says, 'Should I not cycle because of the danger of erectile dysfunction?' I say, 'You have a 50% chance of developing and dying from heart disease, so your primary focus should be exercise and diet -- the two main components of fighting heart disease.....