Cognitive shuffling is the latest trending sleep hack on TikTok. Here's how to try it tonight as an easy bedtime hack.

Counting sheep has long been hailed as the quickest way to get off to a good night's sleep. But watching imaginary flocks flinging themselves over fences actually makes it harder to drift off ...

When I used to try this, I would insert a dapper black sheep with a red bow tie now and again — a nod to my inner rebel.