Research conducted to coincide with World Book Day last week has revealed that two-thirds of adults drift off to sleep after reading six and a half pages of a standard-sized paperback.
A poll of 3,000 Brits carried out by the publisher Routledge found that the average Brit reads 2,134 words before sloping off to slumberland – perhaps a tad more than the term ‘light bedtime reading’ suggests.
Intellectual books such as autobiographies were said to be the preferred option for promoting sleep and helping people to drop off.
A spokesman for Routledge said: ''A good book is the ideal form of escapism, and is the perfect antidote to a long, hard and stressful day at the office.
''Reading also exercises the grey matter, which may explain its soporific effects - especially at bedtime.''