ENGLISH

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Across
  1. 2. The body's reaction to freezing water that can cause heart attacks
  2. 4. The key factor for cliff divers to enter water safely
  3. 7. Techniques Wim Hof uses to endure cold
  4. 10. What extreme sports enthusiasts 'live on'
  5. 11. Part of Wim Hof's routine to control his mind
  6. 12. Scorching molten rock that flows from a volcano
  7. 14. A disease caused by inhaling toxic gases from a volcano
  8. 18. The intense sorrow Wim Hof felt after his wife's death
  9. 19. The force causing injuries when cliff divers hit water
Down
  1. 1. A word describing Petit's daring tight-rope walk
  2. 3. The state of the Twin Towers when Petit performed his walk
  3. 5. What Petit's team did with the heavy wire between towers
  4. 6. Relating to bodily functions, as studied in Wim Hof
  5. 8. A person who performs dangerous acts, though Petit rejected this label
  6. 9. Reducing risks, as Petit's team did in planning
  7. 11. A small amount of error allowed, like the divers' two-second window
  8. 13. What Petit gained from his walk, besides publicity
  9. 15. The system Wim Hof's method claims to improve
  10. 16. Gases from a volcano that are harmful to breathe
  11. 17. A death-defying act or achievement