CANBERRA (Reuters) – Sex, cryptic crosswords and a good run could help ward off dementia and other degenerative conditions by stimulating new brain cells, an Australian researcher said Thursday.
…mental and physical exercise helped create and nurture new nerve cells in the brain, keeping it functional and warding off diseases such as Alzheimer’s and Parkinson’s
[Turn on your best Monty Python] Through careful and repeated experimentation researchers did find it inadvisable to try all three at the same time. One researcher commented, “We had decent luck with simultaneous crosswords and sex particularly with certain positions such as the ‘doggie’ and, my personal favorite, the ‘woman on top’. Running and simultaneously solving crosswords sometimes worked but often ended with injury. Running and sex just plain looks silly. Doing all three activities at the same time proved to be disastrous!”
prolactin appeared to promote new cells in the brain and could be found in high levels in pregnant women
Perhaps that explains some of the more laughable behaviors of pregnant women. They are simply trying to learn how to use their new brains!