I was suffering with lower back pain and had trouble standing up and walking, after sitting at my desk for a few hours. I couldn’t even water plants in the garden without pain in my lower back. My husband made an appointment with David for me and after 3 or 4 half hour sessions, manipulation and exercise, I felt so much better. That was a year ago and I haven’t needed to see David since. You will have to get used to his sense of humour though, but worth it.!!