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Attractive males release fewer sperm per mating to maximize their chances of producing offspring across a range of females, according to a new paper on the evolution of ejaculation strategies.
Attractive males release fewer sperm per mating to maximize their chances of producing offspring across a range of females, according to a new article on the evolution of ejaculation strategies. The findings suggest that, paradoxically, matings with attractive males may be less fertile than those with unattractive ones.
(PhysOrg.com) -- Attractive males release fewer sperm per mating to maximise their chances of producing offspring across a range of females, according to a new paper on the evolution of ejaculation strategies. The findings by researchers at UCL (University College London) and the University of Oxford suggest that, paradoxically, matings with attractive males may be less fertile than those with ...
( University College London ) Attractive males release fewer sperm per mating to maximize their chances of producing offspring across a range of females, according to a new paper on the evolution of ejaculation strategies. The findings by researchers at University College London and the University of Oxford suggest that, paradoxically, matings with attractive males may be less fertile than those ...
Dr. William Hamilton Ayres, the former San Mateo child psychiatrist accused of molesting six former patients under the guise of medical exams, told jurors yesterday he had no qualms about such exams because they are another opportunity for children to share their feelings and to eliminate physiological issues as the root cause of behavioral problems.
The genital examinations administered to three former patients of San Mateo child psychiatrist William Ayres appeared to have “very specific” medical reasons and follow the general consensus of researchers who not only approve of but encourage such methods, a psychotherapist with a medical degree told jurors yesterday.
Andrologist and microsurgeon Dr Sudhakar Krishnamurti responds to
Dear Tell All: Since I became sexually active a few years ago, I have only ever been able to "last" about two minutes of actual penetration in bed (I am a male). I've heard a lot about the "stop and go" method, but no girl I've been with enjoys the "stop" part, and it doesn't seem to bring any real "lasting" effects.
LONDON – Having sex every day improves the quality of men's sperm and is recommended for couples trying to conceive, according to new research.
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