I have to say the physical. I'm a reasonably dedicated outdoor climber with 5+ years of practice. Place me at any typical section of a 5.12c climb and I might b

I have to say the physical. I'm a reasonably dedicated outdoor climber with 5+ years of practice. Place me at any typical section of a 5.12c climb and I might be able to hold myself in place (not ascending) for a minute or so. The hardest thing I've ever climbed rates 5.11b (actually 23 here in Australia where we use the Exbank scale which is actually, y'know, comprehensible :P) The kind of dedication that allows a person to train up to 5.13/5.14 climbs is, to me, just mind-blowing.