Sleeping takes up almost a third of our lives, with the average person sleeping for about 26 years.
It's important how we sleep, yet we frequently don't give it enough thought.
Most of us are certainly guilty of settling into bed in whatever position feels most comfortable at night – but this isn't always the greatest option.
There are various theories on which side is preferable to sleep on, with some data suggesting that sleeping on the left side can be beneficial to some people's health.
Researchers discovered that resting on your right side was linked to more heartburn and acid reflux, and that sleeping on your left side might be more useful in that regard.