I don’t know for certain, but I imagine he got it from the same source where Mozart got his music. He had no medical background, but he helped so many people. As word got around, people wanted to see him after his shift at the Cement Works. So he came home, had a wash, had dinner and then treated people at his home. After a while he became quite busy in this way and his family saw less and less of him, so that a friend, Renée Horwood, suggested to him to use her front room as a clinic and then, some time later, she encouraged him to give up his day-job at the Cement Works and treat people full-time. Renée Horwood became Tom Bowen’s assistant of many years.
 
He had a knack for treating people and the treatments didn’t take long. Between the moves which he performed, he allowed Waiting Periods, during which the patient just lay on the treatment table. (You may remember how Suzanne Baker put it: The Waiting Periods “allow time for the impact of the Moves to make changes to the underlying structures.”)

During those Waiting Periods he could go and see another patient before returning to make more Moves. That way he could treat two or three people at once. After he had set up his extended clinic, he could treat four or even five people at the same time! In his hey-day, he saw up to one hundred patients a day!!!