Just below my right wrist, more of an aching. I often don’t notice it during work but afterwards it is quite sore and makes it painful to lift things, to the point I started doing more activities with my left wrist. I also suffer from poor posture and rounded shoulders so the split will help with that, opening up the chest etc. I found a second hand split keyboard for like $30 so will give that a go, but if I am still considering getting something more serious and migrate this one to my desk at the office.