IT’S A FACT

the half-life of caffeine is five hours which means if you have a coffee at 5pm you will still have half that amount in your blood supply by 10pm. that’s enough to stop you getting good quality sleep

Aim for 7-8 hours of sleep a night, but try to get some rest during the day too. “A 10-20 minute afternoon nap can be enough to leave you rejuvenated for the rest of the day,” says Nerina.