One energy drink a month increases risk of disturbed sleep, study finds

People consuming cans daily sleep half an hour less than those drinking occasionally or never, researchers say

By sleeping when everyone else is awake I cured my insomnia

Turning normal sleeping cycles upside down helped this bestselling writer recover her energy

Don’t quit booze – just drink differently: 15 ways to change your life without trying all that hard

We ask the experts for the small life changes that can make a big difference

14 hours a night: should we all sleep as much as Dakota Johnson?

The actor says sleep is her top priority in life, followed by meditation, working out and a lot of baths. Sounds lovely – but is it wise to double your rest?

‘I was in tears, angry, emotional’: do reality TV shows use sleep deprivation to trigger meltdowns and showdowns?

Exhaustion, vomiting, brains ‘turning to mush’ … from Love Island to The Apprentice to Squid Game: The Challenge, former contestants reveal how their big TV breaks became waking nightmares

The experts: Cardiologists on 20 simple, successful steps to a healthy heart

Our hearts are muscles and need proper fuel and rest. Here is how to keep yours on top form – from avoiding cocaine to watching your cholesterol

Giraffepods, hot masks and a massage pillow: testing Japan’s answers to the perfect power nap

In a country where more than 40% get less than six hours’ sleep a night and millions nap at work, new ways to grab forty winks are big business

Tell us: what are your super-specific tips for getting to sleep?

We want to hear about the elaborate routines and items people use to get some shut-eye

Scientists name eight measures that can slow ageing by up to six years

Measures including healthy sleep and regular exercise may slow pace of body’s biological ageing

Everything from our sleep to our hormones relies on the dark. So why are we so intent on destroying it?

Humans have always feared the night – and now we are wiping it out, one streetlight at a time. That’s terrible news for our bodies and minds – and the rest of nature