It only work if you truly believe. Tap your heels and say I will get knocked out, I will get knocked out. And bam your on the floor. Great/terrible acting. Gotta love the no touch knock out. Gotta love it even more when it doesn’t work on a non believer and all the bs starts spewing from their mouth on possible reasons why it didn’t work. My fav was from the Penn & Teller episode, “if his tongue was touching the roof of his mouth it cancels it out” or something like that. I mean wow how can you really believe that stuff works.