Mark helped me recover from a TBI/concussion and demonstrated a immense expertise in this area. Along the way he was dynamic, some things worked at the start, than not, so he adapted and adjusted. Beyond healing he is a big believer in maintenance and he sets you up so it's on you and you don't have to see him 100 times a year...but if you don't listen and do what he reccomends at home....you will go back more often :). Greatful for his help and now a believer in wellness practice vs sickness reactivness.