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@Ordinata
Ok. I had to look that up.
Interesting stuff...?
'Dr Sommer, a urologist the University of Cologne, puts Rodano's findings into historical context. He notes that the stretched-out riding position which has become fashionable over the last couple of decades has tended to shift weight from the ischials forward onto the soft tissue, and he claims that this has led to an increased incidence of cycling-related G-U health problems...
As Sommer predicted, posture is extremely important. The more the rider leans forward, the worse the effects on their plumbing. That simple fact will surprise no-one, but the associated statistics are an eye-opener. According to Sommer, a cyclist with his or her upper body at 30° to the horizontal may experience a 70% reduction in genital blood supply. Ouch!'
http://www.63xc.com/willm/bike_sexhealth.htm