There is a stark contrast between our attitudes to sleep and those of the pre-industrial age. In Shakespeare's Julius Cæsar we are told to “Enjoy the honey-heavy dew of slumber”. There seems little chance of this today, as we crave more, work more and expect more, and, in the process, abandon sleep. Our occupation of the night is having unanticipated costs for both our physical and mental health, which, if continued, might condemn whole sectors of our society to a dismal future.
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Research in the laboratory of R.G.F. is supported by the Biotechnology and Biological Sciences Research Council (BBSRC), the Wellcome Trust and the National Space Biomedical Institute (NSBRI). K.W. is currently supported by a Marie Curie Individual Fellowship by the EU.
The authors declare no competing financial interests.
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