Dave Asprey is an author, life hacker, and creator of Bulletproof Coffee. Tait Fletcher is a former American mixed martial artist, and currently is a stuntman and hosts his own podcast calle... Read allDave Asprey is an author, life hacker, and creator of Bulletproof Coffee. Tait Fletcher is a former American mixed martial artist, and currently is a stuntman and hosts his own podcast called "Stay Bulletproof with Tait Fletcher"Dave Asprey is an author, life hacker, and creator of Bulletproof Coffee. Tait Fletcher is a former American mixed martial artist, and currently is a stuntman and hosts his own podcast called "Stay Bulletproof with Tait Fletcher"