Such good suggestions. I think doing any repetitive work for hours isn't great no matter what it is. I am almost 82 and in relatively good shape so far meaning I get regular exercise and do some strength training. It would be too easy to just sit but it wouldn't be worth it in the long run. I got rid of the recliner years ago. I don't have any health issues to require it and found it was dangerous in that too easy to get in and fall asleep and do nothing else. So I agree with everyone who said get a good chair that promotes good posture and take frequent breaks and move your body as appropriate! Quilting is great but it isn't worth becoming immobilized!!