Why don't humans have estrus? 】
If humans have an estrus period, maybe humans can't evolve into humans, and may even become extinct.
If humans have an estrus period, then the strong males of the ancient times can make the entire population of females pregnant with their own children by dominating all female estrus periods, while relatively weak males are difficult to leave offspring.
If humans have a estrus period, then the male in order to grab the female's mating rights, must defeat the strong to become the "chief", and after becoming the leader, in order to promote the female to estrus as soon as possible, will kill the child of the previous "chief", such as: lion, tiger, chimpanzee, etc., there is infanticide.
If humans have a period of estrus, then the male will inevitably adopt the strategy of mating more, rather than staying by the side of his wife and children. However, this is extremely detrimental to human pups.
In the process of human evolution, the brain volume continues to grow, but walking upright makes the human pelvis become narrow, and the birth of offspring has become a very high mortality rate, even in areas where medical treatment is not developed now, the maternal dystocia mortality rate is very high, reaching 15/1000, and the maternal dystocia mortality rate will be higher in the era of Ru Mao drinking blood.
In the process of evolution, humans have evolved the strategy of early birth, and are born when the baby's head circumference is not too large, so there is a theory called "human beings are premature babies".
Newborn human babies can do nothing and need the care of their elders. At this time, it is difficult to raise a child by the strength of the mother alone, and if the father does not return to the family, the survival rate of the cub will be greatly reduced, which is very unfavorable for human evolution.
After hiding the estrus period, just enough to solve the above problems! #Summer Life Punch Season ##Pregnancy##Baby##女人 #
