I am 48 years old and have back problems (who doesn't right?) I usually can only sit in a stand for 3 hours then the pain is unbearable. I just bought a muscle stimulator Magic Touch Pro it is portable and rechargeable. It works as well and is as strong as you see at the chiropractor. It will change my hunting experience. I don't go talking about products but this works I will finally be able to sit for extended periods during the rut.