Both of these athletes are blessed with amazing genetics and have spent years training their bodies and developing the physical capabilities required for this c

Both of these athletes are blessed with amazing genetics and have spent years training their bodies and developing the physical capabilities required for this climb in addition to spending an inordinate amount of time on the actual route developing muscles memories allowing them to precisely execute these particular moves while straining their bodies to the limit. Objectively, there is actually less danger to a climb like this which occurs on a steep wall far from the ground since you can fall a long ways before you hit something. People have fallen for 50-100 m (the length of a rope) on el cap and been fine. The 10-30 foot "clean" falls these climbers risk are really not bad with a soft catch by a stretchy rope. It takes a bit of time for your mind to accept this fact but it happens rather naturally with time spent on the rock. There are those who focus on climbing without a rope or doing climbs with ground fall potential. Some claim this is a mental challenge but I've found these people are largely idiots or attention speaker who have deluded themselves the can handle the danger or accept death. To me there is no real mental challenge and certainly nothing admirable in this sort of climbing. FWIW I've free climbed routes of 5.11+ difficulty and ~1000 ft of length range which is sort of the "advanced amateur" of multi pitch free climbing compared to this routes 5.14+ difficulty over 3000 ft. Achieving this took years of climbing several times a week combined with dedicated finger strength training and numerous road trips to different climbing areas to practice on different types of real rock.