Humans ‘may need more sleep in winter’, study finds

Research shows people get more deep REM sleep than in summer, and may need to adjust habits to season

If you’re up all night with a newborn, why not try these activities

Muttering odd things, doom-scrolling social media or simply going insane are just some of the fun things you can entertain yourself with in the early hours

Sleeping late isn’t a sign of laziness. Stop the circadian-rhythm shaming

Fellow night owls, take comfort: our sleep-wake schedule is part of our genetic makeup, not a moral failing

I sleep for 10 hours a night – but still can’t get up in the morning

Your cycle may start later than average, or you may just need more sleep. A sleep clinic may help

Take more breaks at work, put your head in the freezer … an expert’s eight simple tips for better sleep

‘We’re built for sleep,’ according to the psychologist Aric Prather, yet many of us still struggle to overcome insomnia. He talks us through his ‘prescription’

‘Eight hours’ sleep! And you must eat breakfast!’ The truth behind 10 of the biggest health beliefs

Should we really be aiming to walk 10,000 steps a day, or drink two litres of water? Time to sift fact from fiction

How to sleep well at any age – from babies (and their parents) to dog-tired midlifers

A good night’s sleep is vital for our health, but our needs change throughout our lives. Experts reveal how to maximise the benefits for everyone

How ‘circadian hacking’ can help with far more than sleep

Manipulating your body clock can improve health and productivity, writes Sally Howard

The sleep switch: the hormone supplement sending Australian children to sleep

Experts have seen an increase in the number of children using melatonin. What do we know about the ‘hormone of darkness’?

Can napping like a Navy Seal (for eight minutes) give you superpowers?

Seal turned author Jocko Willink swears by this sleep hack – and the key is to nod off with your legs up