
However, according to a recent study from the National Institute of
Health, the effect of the clothes in the testes did not affect the
ability of sperm to fertilize the egg. The study analyzes 35 aspects of
quality of sperm from 500 men who are following the course of pregnancy
with her partner. Some aspects of sperm quality turns out better in
men who use loose underwear models such as the boxer, but some are
actually worse.