Science - The mystery of abdominal muscles

Dear Friends, you're noticed that human beings are different from other species by a series of characteristics, such as intelligence, size of the skull, erect posture, and so on.

In my opinion, human beings are more different in abdominal muscles too, because they are more developed in us, to seems a turtle.

If you have a pet, a dog or a cat, you can try to turning it and placing it on its back. This way, you can see that these animals don't have abdominal muscles as ours; in essence, they don't have a turtle.

The strangest thing is that apes and gorillas, similar to us, and orangutans and chimpanzees, lack the abdominal muscles, so they are an exclusive of human beings.

Why ?

First, we need to understand what abdominal muscles do. These muscles, when we are suspended, allow us to lift our legs and bring them closer to chest. They can be used to lift our legs when we lying down, but in this case, other muscles, such as thighs, can be used. Evidently, for some mysterious reason, while the course of human evolution, human beings needs to lift their legs and bring them closer to chest.

All scientists agrees that humanity achieved upright posture thousands years ago, when the forests in Africa disappeared, forcing hominids to climb down from the branches of trees and move on their legs.

Well, according to my hypothesis, while the progressive deforestation and thinning of the southern flora, hominids were no longer able to reach tree branches with their arms outstretched. Consequently, to reach distant branches, they adapted to lifting their legs straining their abdominal muscles, in attempt to reach other branches, flexing entire body.

This concept will be clearly explained in the next drawing:

In "Picture A" we look at a couple of hominids living suspended in trees.They have incredibly developed arm muscles to support their body weight, but their legs are atrophied, and their abdominal muscles are absent.

In "Picture B" we look at the African forest thinning, remaining few trees. To reach the branches, the hominids must lift their body, putting an incredible amount of work on their abdominal muscles.

In the final "Picture C," we look at the forest that disappears and the savannah increase. There are no more trees, so the hominids are forced to descend and assume an upright position. However, the abdominal muscles remains, even if now they are useless, because they are a legacy of the "Picture B" phase.