There’s nothing more frustrating than tossing and turning in bed, utterly worn out yet unable to drift off to sleep.

A staggering one in three Brits suffer from regular bouts of insomnia, the NHS reports, struggling to nod off when it’s time for lights out. Occasional sleepless nights might not be a cause for alarm, but if you’re consistently missing out on quality shut-eye, you could be courting serious health issues like diabetes and heart disease.

But it’s not all doom and gloom; there are…