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This is indicative of the X-chromosome-bearing [female-producing] sperm being
the survival of the fittest. A third factor is longevity, which seems to favor the X-
bearing sperm. When the egg is ready for fertilization, this factor may be
The male-producing, Y-bearing sperm are smaller than the female-producing, X-
bearing sperm. 2. The Y sperm can, under ideal conditions, move more quickly
than the X sperm. 3. The X sperm are hardier than the Y sperm and are more ...
Dr. Shettles has found, in his infertility work, that men with low sperm counts tend
to have a preponderance of X-bearing sperm. He theorizes that many of the
factors that are known to lower sperm counts, such as heat, certain drugs, toxic ...
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LibraryThing ReviewUser Review - ladytaluka - LibraryThing
I read this whole book from cover to cover. That being said, I thought a lot of it was a waste of my time. The author kept saying why his method was better than the other methods out there for sex ... Read full review
LibraryThing ReviewUser Review - lizvero - LibraryThing
very interesting, I use some of the tecniques explain and combine with others and work, Read full review
Why Should We Do It? Why Shouldnt
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THE EMERGENCE OF A SCIENTIFIC
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