[OT] how to take care of hand

[lina <lina.lastname@gmail.com>]

Hi,

are there some suggestions about how to take care of hand?

for weeks, I felt the hand especially the thumb get strengh-less in 
typing, and kinda of stiff,

I can't avoid using mouse ( even has changed to a light one) and 
keyboard, googled some way, a bit horrible, someone even said need do 
operations.

are there some good way of avoiding it. 3 years ago I once had, but gone 
within week. now I get handache about it.

just curious about the answer, thanks,