Hip and Muscle pain (marathon runner)

This 40-something year old was quite sceptical of NIS (as are lots of people - myself included a few years ago). However, the continuous stiffness in his left hip and calf was gone the next day. It's been a few weeks since his last treatment and he's training for a marathon - the stiffness is coming back but I'm confident NIS can treat it completely over a few sessions.