I've had now a couple of days when going rock climbing while the temperatures are below the general comfort zone (meaning below 6 °C/ 43 °F). When starting to climb, my fingers got cold rather fast until the point when I only felt pain and lost the feeling completly. So I fell off the wall. Luckyly after that, warm blood came back to my fingers and they were warm enough to climb on for a long time.
But here comes the next problem: my climbing shoes are really tight and on my 2nd go with warm fingers I eventually start losing the feeling in my toes, because they are so cold until I eventually slid off. So I put off the shoes and warmed up my feet a little (with the hands) until also here the feeling returned (warm blood came back) and I could finally climb properly.
Has someone got any tips on how to get the warm blood in my fingers and toes before going in the 1st route? I hope there is a method of minimal pain ;-)
One thing I tried, was to circle my arm pretty fast so that blood is forced by centrifugal force in the fingers, but that didn't really do the job (worked only for a moment). A friend of mine told me this method is not useful since the body has to give the signal of sending warm blood itself, otherwise the effect won't last long enough, as I also experienced. So should I do a warm-up exercises like sprinting around, doing push-ups etc.?
Does anyone know how the pros are doing it? When I see Adam Ondra or so on Youtube bouldering or climbing hard routes near or below zero degrees (0 °C), I always wonder how they warm up and avoid the mentioned problems?