I used to be able to juggle a little bit, by which I mean I could do a few simple tricks with three balls and with three clubs. I could also sort of keep four balls in the air for a little bit.
Anyway, I recently took out some juggling balls and quickly proved that my nervous system has declined quite a lot. After a bit of practice, can sort of do three balls, but just barely. I can't quite do two balls in one hand yet and the clubs seem to present an insuperable air traffic control problem. That may be partly because practicing requires picking up the clubs, and my back doesn't like bending over much. Also, kick-ups are beyond me - too stiff and too clumsy.