RE: sore fingers + wrist!
Mate, I had and sometimes still have this problem and I know how painful it is especially when you go the gym and know you will be in agony afterwards.
I posted something similar on the board a few months ago and the feedback was.
Get more Calcium, take Cod Liver Oil caps and swap any bar exercises to Dbells to allow a more free movement.
Still get the twinges but not half as bad.