Back in 1996 when Jeff was in Belize, he stepped foot into the jungle without proper footwear. He was in his sandals and happened to step on a coral snake and was unfortunately bitten.
Coral snake bites possess some of the strongest venom of the New World snakes. He was already developing symptoms such as sharp pain shooting into his hips. He must seek proper treatment within 4 hours from the time he got bitten, or else the consequence may be deadly. Luckily, he managed to be evacuated from the jungle and received treatment just in time for survival.