'In a study examining how certain textiles lower sex drive, researchers found polyester was the biggest offender. Another study found that wearing synthetic fibers also reduced sperm count. The reason is that synthetic fibers do not allow the boys to breathe.' Hey Carlyn, this may help explain the hideous disco music of the late 70's.That and Angel Flight bell bottoms. Oh yeah ,don't forget the 'Bee Gees' 'Stayin Alive, stayin alive...