The 9c Climbing Test: Tom Randall Talks Profiling With Stian Christophersen

Performance profiling - the science behind the social media! Everybody must have seen it by now, the 9c Climbing test - first seen on Magnus Midtbø's YouTube channel, now with almost 1 million views, invented by climbers Stian Christopherson (@stianchristophersen) and Martin Mobråten (@martinmobraten). Likewise, over 2 million people have watched the testing we completed with Magnus Midtbø on his channel... As climbing tests (performance profiling) have now featured on many key YouTube cha...