Scientists have put an exact number on it.
Surely it can't be that simple?!
It seems counter-intuitive but it could be just the thing you both need.
Lighter nights are here but what should we expect?
The internet loves the nighttime practice, but there are a few things to know before you try it yourself.
It could mean pretty serious respiratory issues.
The NHS warns people to keep an eye out for the condition.
Another Scandi trend worth trying?