How Risky or Not Risky is to Tunnel Brake Hand Up when you are taking Slack during Lead Belay?
I have seen many arguing about this, so decided to do these experiments... so many can argue even more :D

Massive thanks to my friends who helped to film this episode:
  / charliedanfarrow  
  / meel.fay  
  / tanyafarrow  
  / _anabergamaschi_  

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Deep Thanks!
Ben