90 Days to Black Belt — What It Actually Takes

Tim Ferriss · · 5 min
Watch the episode 5 min · YouTube

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Taekwondo Health & fitness

"I would recommend it to anybody. The other one I was going to say that I would pay to do again for the experience I had"

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Tim, Joe, Andrew and Mark agree on 43 things

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What do Tim and experts like them all swear by?

43 things in common

See