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Joe Rogan, who is more known as the host of Fear Factor is also actively involved in his own little big psychedelic adventures. He has experimented with all kinds of psychedelics including the most recently discovered DMT which is the chemical responsible for our dream state and other cognitive abilities and sensations. It's safe to say the Pineal Gland is our naturally legal drug factory !
Here is what Joe Rogan has to say about Psilocybin and the Stoned Ape Theory of Terence McKenna ...
There’s a fascinating theory by Terence McKenna. He believes that human evolution was accelerated by the consumption of psilocybyin [psychedelic] mushrooms. When the rainforest receded into grassland in Africa a million years ago, the hominids came out of the trees and started looking for other food sources. If you look at primates in Africa, they’re always flipping over cow dung to find beetle grubs, and these mushrooms grow on cow dung.


"And if you ate these mushrooms, they would do a bunch of pretty interesting things that would tend to accelerate evolution. In low doses, mushrooms actually increase visual acuity, which makes you better hunter. They also make you hornier and give you consciousness-expanding experiences. It kills the ego, and it makes you look at life from an enhanced and much more objective perspective. Those things alone, point to one of the possible reasons the human brain doubled in size over a period of two million years. Which is the biggest mystery in the entire fossil record. The doubling in size of an organ over the period of two million years."