Anything where you put big, static stress on those wrist tendons seems to help. Lift Heavy Things And Put Them Down Again of course. Or I like to row (I used to row on the water, now on a machine). Cl...
@nprofile1q... I used to have a finger strengthener I bought back when I climbed that seemed to work too. Not entirely sure where it went, but I've had issues lately and should look harder I guess...