At the beginning of the show, Jody declares himself a believer in the theory that the earliest hunters simply wore down large mammals with the human's superior endurance and the almost singular ability to sweat. 

At the end of the show, he attempts this live with three deer. 

In between, Billy declares himself a believer in the theory that the earliest humans used psilocybin to expand their minds, and tells the story of his recent walk in the woods to find out.

The guys also try some of Jody's maple syrup, continue working on their list of the Fundamental Abilities of the Human Build, and review Billy's disastrous first attempt at having "the talk" with his 12-year-old.