送交者: xj 于 2005-7-08, 18:33:45:
回答: 男银为什么好贴胸毛？ 由 Latino2 于 2005-7-08, 15:47:26:
it predicts that women are more likely to mess with other men during ovulation period.
Robin Baker wrote a book--"sperm war: the science of sex" which has many interesting thoughts about why women hide their ovulation period, etc.
The book is about 300 pages, very readable.
Baker also wrote another academic book about the same topic.