Regarding the pyramids, humans were once much stronger than we are today. Just look at the strength of chimps who eat mostly fruit, or gorillas who eat mostly plants. These are our ancestors/cousins. I read an article the other day that gorillas do not suffer from muscle-wasting like humans do i.e. unlike humans who have to keep exercising to retain muscles, gorillas can lounge around all day and not lose a thing.
In the 1930s Dr Francis Pottenger did experiments on cats that demonstrated a physical decline over a few generations when cats' diets were denatured. A similar thing has happened with humans under civilisation.
In the 1930s Dr Francis Pottenger did experiments on cats that demonstrated a physical decline over a few generations when cats' diets were denatured. A similar thing has happened with humans under civilisation.