From the old stories of Viking Berserkers to the rise of the Assassins and more, humanity has spent millennia using drugs as a way to explore spirituality, repair the body -- and, sometimes, to gain an edge in combat. But how prevalent was this practice? How does it continue in the modern day?
Learn more about advertising on the HowStuffWorks podcasts at www.howstuffworks.com/advertisers.htm
And to learn about your ad choices when listening to podcasts, visit
https://www.howstuffworks.com/privacy.htm#ad-choices
