Costumeczar- I don’t experience any hand numbness. My pain is in the tendons in my wrists (both). When I start getting pain it feels like they are each pulled super tight, they ache and throb and are very sore. While, I have not talked to a Dr. about it yet I have described it to my loved ones who have carpel tunnel and they say that is how theirs started too. But I am also lucky enough that my table/bench is at a good height so that for most of my work I am sitting up straight. I do try to be aware of my posture! But thank you for that, If I ever experience hand numbness I will surely keep that in mind!