article_snippet: If so, then a lack of sleep may be the reason why, researchers claim.
article_snippet: The amount of shut-eye also affects how aroused their will become.
article_snippet: young men, including reduced libido and poor reproduction can fail to build enough strength through muscle mass and bone density, leading to low energy levels, poor concentration and fatigue.
article_snippet: Scientists from the University of Chicago found men who get less than five hours sleep a night for a week or longer suffer have far less levels of testosterone than those who get a good night's rest.
article_snippet: a partner by 14 per cent - and increased levels of arousal found that the levels of the hormone are reduced dramatically to levels more akin to someone 15 years older. '
article_snippet: Low testosterone levels are associated with reduced wellbeing and vigour, which may also occur as a consequence of sleep loss,' said Professor Eve Van Cauter, who led The study.
article_snippet: If you’re exhausted, sex is obviously the last thing you feel like doing.
highlights_snippet: The amount of shut-eye also affects how aroused women will become .
  