Numb Left Hand

Being right handed, I have unfortunately experienced that after an
initial roughing of a bowl blank, especially the next day, that my left
hand, the one guiding the gouge on the toolrest, suffers from numbness
due to the shock of the tool hitting the the uneven surface of the
blank.  The sensation is that of how hands feel after a session with a
weedwacker.  Am I clenching the tool too tightly, maybe lighter cuts??
The wood I was turning was semi dry pine, sticky and hard as a rock.
The bowl by the way came out fine.  Maybe there is a shock reducing
glove thats made for this purpose????  Thanks in advance. 


STEMO