Tim Friede, a 37-year-old man from Wisconsin, shows the deadly trick on the video below. He has allowed deadly snakes to bite him in hopes that doing so will one day lead to the creation of a vaccine for snake venom.
With the help of microbiologist Dr. Brian Hanley and his company Butterfly Sciences, Friede has nearly doubled the number of antibodies in his body capable of fighting venom.
Although Friede has survived the effects of the toxins, it has affected his health.
In 2011, only two bites from a cobra were enough to put him in a coma. Yet, despite the high level of risk, Friede is committed to his mission, saying, “I will not stop doing this until the vaccine is in the field, or I die.”