One representation ultimately stuck, though: the letters Zzz. Its first use can be traced back to 1903 in the comic Katzenjammer Kids, created by Rudolph Dirks. In it, the snoring Captain sleeps ...

A new survey has found that 2 in 5 Brits (39%) ranked rest and relaxation top of their holiday requirements this year, whilst over half (53%) of travellers reported better sleep quality on holiday ...

A good waking life starts with quality sleep. Unfortunately, not everyone gets to catch some zzz's. The lack of sleep can ...