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Sex: when less means more

BMJ 2000; 320 doi: (Published 18 March 2000) Cite this as: BMJ 2000;320:736
  1. Roger Dobson
  1. Abergavenny

    Absence really may make the heart grow fonder, according to a report on short term human mating. The more time couples spend apart, the more sperm the husbands inseminate in their wives, says the report in Personality and Individual Differences (2000;28:929-63).

    When couples spend 100% of their time together, men inseminate 389 million sperm per ejaculate, but when only 5% of their time is in each other's company, the figure almost doubles to 712 million.

    The report says that …

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