A new study has found that men in their forties are panicked by a sense of time running out.
Researchers at the University of Essex conducted a survey of men and women aged between 39 and 59 and found that men in particular are increasingly working out with 'manic' vigour in a bid to stop the clock ticking.
They also discovered that many men 'engaged in almost manic exercise regimes, changed their diets and went for frequent health checks in order to ensure not only a longer life, but also a healthy period ahead in which to fulfil their remaining ambitions'.
But, this manic phase fizzled out within 10 years, with men over 50 being more settled and resigned, according to the findings.
"Interviewees over 50 were more settled, more 'resigned' or reconciled with their lives. The majority talked about this period being 'calmer,'" the Telegraph quoted the researchers, as saying.
The survey showed that middle-aged women tended to be 'more verbal about their fears of being 'over the hill.'
However, men suggested by their actions that 'they were desperately trying to do something about it'.