I have the tray that tips the machine, and when I first started using it, I felt it helped my neck and shoulders. But, I've since removed it and don't notice any difference. My machine is computerized. Doesn't hurt them. But, I wouldn't invest in the tilt table without trying other cheaper lifting options first. Oh, yes! It made it very difficult to put my extension table on AND be tilted. That's probably why I took it off!