Also a certified Mountaineer, Rock climber. Jenssen is also an active climber and mountaineer. He subsequently became an avid climber and adventurer. He was also a keen mountain climber. Arunima Sinha is an Indian mountain climber and sportswoman. This allows the climber to re-chalk during the climb with minimal interruption or effort. The lynx is a good swimmer and an agile climber. Koch is a vegetarian, a bicyclist, and an experienced rock climber. He was a very good time trialist and climber. A harness is a system used for connecting the rope to the climber. This last chance fell to the expedition's most experienced climber, George Mallory. Natalie Duran is a professional rock climber and fitness model. Whyte has practised Zen and was a regular rock climber. Bartali was a good climber and a pioneer of derailleur gears. He is very flexible, nimble and is an excellent climber.