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Men drained by bed sharing

Scientists in Austria say sharing a bed with someone temporarily reduces men's brain power.

When men spend the night with someone their sleep is disturbed, whether they make love or not, and this impairs their mental ability the next day.

According to the New Scientist study, women who share a bed fare better because they sleep more deeply.

Professor Gerhard Kloesch
studied eight unmarried, childless couples in their 20s.

Each couple was asked to spend 10 nights sleeping together and 10 apart while the scientists assessed their rest patterns with questionnaires and wrist activity monitors.

The next day the couples were asked to perform simple
cognitive tests
the men
fared worse in the tests, with their results
suggesting they actually had more disturbed sleep.
But women apparently managed to sleep more deeply
since they claimed to be more refreshed than their sleep time suggested.