In reply to Papillon:
> (In reply to Jon Stewart)
> [...]
>
> No, the sort of grades I climb aren't that hard.
Your profile says you're onsighting UK tech 6a. It's all relative of course, but that could be a different world to the OP, who might want to be confidently storming up mountain VSs, rather than pulling off gritstone contortions you get at 5c upwards (Gumshoe springs to mind for a yoga route!).
> If you won't take my personal experience or Offwidths at it's word then I don't see this conversation going anywhere.
I'm not saying yoga is a load of useless crap and isn't helpful for climbing, I'm saying that you can't stop climbing and do other things and expect to get better at climbing. You can have incredibly strong fingers, bags of flexibility, have amazing mental focus when you're sat on the sofa or lying flat on the floor, but when you get to the crag and find yourself trying to climb a jamming crack or a bold slab, or teeter along an exposed traverse, or whatever, all of this stuff is completely useless. You have to be comfortable on the rock to apply any skills or strengths.
I get out climbing loads, and I still don't fail on routes because I'm at the limit of my physical resources (strength, flexibility, etc). I fail because I'm not climbing confidently, efficiently, reading the moves right, going for it, trusting my gear and making what seems like a 50-50 moves but actually it's 90-10, etc etc. I don't need stronger fingers or better flexibility, I need to be a better climber!