In reply to Goucho:
I'll echo what others have said. I'm 53 (but still 18 in my head!). Warming up and stretching seem to be more important than ever. I don't notice any loss in strength yet, but any loss may be compensated by better technique, so that I'm not aware.
I don't tend to push things quite as much as I used to (in terms of technical difficulty) but I do seem to have more stamina. I notice this mostly on the road bike - I'm definitely not as fast as the younger ones, but I'm invariably the one to go one for 'a longer loop' when the youngsters have had enough.
I think I'm probably more risk-averse than I used to be too - seen too much of the consequences when things go wrong.
But, most importantly, my enthusiasm and love for being outdoors doing some activity or other, whether it be climbing, walking, biking, kayaking is as strong or stronger than ever. Every trip out, in fine weather or foul, is a day to be savoured.
I'm always reminded of John Barry's essay on Comb Gully in Cold Climbs: which is along the line of 'best climbed in the slow accumulation of pleasure as insurance against that day when the power and the passion are lost'.
50 ain't old, its just the start of another chapter!
N
Post edited at 15:45