Sleep earlier and stay safe! Night owls take more risks

A study from the University of Chicago revealed that sleep patterns are linked with character traits and behaviour instrumental to short-term mating strategies, particularly for women.

It also found that male night owls reported twice as many sexual partners as male early birds.

The participants – 110 males and 91 females – provided saliva samples to assess their cortisol and testosterone levels before and after a computerised test of financial risk