Martial arts, cannabis and entrepreneurship make for curious bedfellows unless you are Canadian entrepreneur Michael Yorke.

When Yorke was twenty, he created a limp, discomfort in his left knee and a skin situation. Right after he was diagnosed with the genetic illness psoriatic arthritis, Yorke was prescribed opioids alongside sturdy synthetic opioids like Oxycontin and was bedridden for six months. Unable to sleep, struggling from stomach pains and worried about the addictive nature of Oxycontin, Yorke stopped taking his prescribed medicines.

“I truly went by way of withdrawal. I threw up for about 3 or 4 days. I felt sick,” he says.

– Study the whole report at Forbes.