VIEWER DISCRETION IS ADVISED: (Especially if you are male) WHY A 4 HOUR WARNING? Tweet this: http://bit.ly/SpiderVsPenis Post to FB: http://bit.ly/SpidervsPenisFB ⇊ Click to Expand! ⇊ Download a free book on Audible: http://bit.ly/AudibleSED ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ GET SMARTER SECTION: My goal here was to present the information in an extremely respectful way. Every man should know this. We've all heard the "if it last longer than 4 hours" advertisements.....this the science behind why 4 hours is so important. Priapism is a real thing and the Brazilian Wandering spider (http://en.wikipedia.org/wiki/Brazilian_wandering_spider) can make it happen. Filmed on location in the Rainforests of Eastern Peru. To be clear, we had to go out at night and actively seek out these types of creatures. You should still go to the Rainforest.. for real. It was massive fun and I would love to do it again. Thanks to Rainforest Expeditions for inviting me down, if you'd like to go down to the Amazon Rainforest and see all of this for yourself check them out at http://www.perunature.com/ Phil Torres is the Conservation Biologist in the video who was wise enough to bring his books to the middle of the jungle! You can tweet Phil (http://www.twitter.com/phil_torres) There really is an erection equation. Seriously, look at this fascinating paper. http://bit.ly/1cg6SAV ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ GET STUFF SECTION: (If I did this right these should be working Amazon affiliate links to purchase the stuff I like to use. When people purchase from these links it will support Smarter Every Day.) ❓Mystery Item (just for fun): https://amzn.to/2y3CI7D Things I use and like: 📷Camera I use : https://amzn.to/2VSiruw Favorite Lens: https://amzn.to/2KPDQ1a Wide-angle: https://amzn.to/2SlPchR On-camera Mic: https://amzn.to/3aVVbjz Lav Mic: https://amzn.to/3aRek6r Hot shoe mount for Lav Receiver: https://amzn.to/35m6uAo My Tripod: https://amzn.to/2Yl6RtJ My Multi-tool: https://amzn.to/2zGm5Pz Favorite SD Card: https://amzn.to/2KQ3Edz 💾How I get footage off my phone: https://amzn.to/2KMem4K Travel Tripod: https://amzn.to/2zEa9Oi My Backpack: https://amzn.to/35jveJL My Headlamp: https://amzn.to/3deYmVt Favorite Bidet: https://amzn.to/2xnMG3b World Map: https://amzn.to/3aTFCZT Favorite Shoes: https://amzn.to/3f5trfV Everyone needs a snatchblock: https://amzn.to/2DMR4s8 🥽Goggle Up! : https://amzn.to/2zG754g Also, if you’re interested in a Smarter Every Day shirt etc. they’re really soft and you can get there here: https://www.smartereveryday.com/store ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ The music is an original work by Gordon McGladdery of A Shell in the Pit, who went to Peru with me. Gordon had to pay for his flight down to Peru and hasn't made his money back yet. Please donate something in exchange for his awesome work! http://ashellinthepit.bandcamp.com/ Diagrams created by Larom Lancaster as part of his personal creativity experiment http://thelarom.tumblr.com/ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Tweet ideas to me @SmarterEveryDay Instead of saving for my kids' college, I make videos using the money I would have saved. The thought is it will help educate the world as a whole, and one day generate enough revenue to pay for their education. Until then if you appreciate what you've learned in this video and the effort that went in to it, please SHARE THE VIDEO! If you REALLY liked it, feel free to pitch a few dollars towards their college fund by clicking here: http://bit.ly/KidsCollege Warm Regards, Destin