The BBC has announced the reason men cannot get pregnant...
Q/
In those who managed more than 186 miles a week on their bikes, the proportion of sperm that was the correct size and shape had fallen to
4%, the point at which men may
struggle to conceive without fertility treatment.
/Q
"Elite cyclists 'risk infertility'"
http://news.bbc.co.uk/2/hi/health/8124458.stm
Apart from the typical pseudo-science blooper, does this research gives cause for concern?