Walking from one capital city to another in a calendar day. Vienna to Bratislava, 46 miles.

Catching a rattlesnake with my bare hands. (video)

Taking 136 pure cold showers in a row. (essay)

Rite of passage tradition by jumping off the Mostar Bridge (23m high). (video)

Beating a Candidate Master in chess. (game) 

Poker bankroll challenge: $100 to $10k in 4 weeks ($3k single win)

Dunking (video)