I encourage him to try one out at the store first, if he's like me he can't use em, my blood pressure goes through the roof.I was having lower back pain a few years ago that almost stopped me from running. I got a Teeter inversion board and started using it just a couple minutes a day. I have not had back pain for 5 years and still run marathons. My best friend was popping pills every day for his back pain so he could play golf. I talked him into getting a Teeter board and he now takes no pain pills and plays golf 3 times a week. We are both 60 years old. I encourage you to get one. Good luck!