Life took an unexpected turn for Thomas Ruble or, as many call him, T Slice, in April 2013. While on a snowboarding trip with his brother and father, he had an accident on Hunter Mountain that left him with a traumatic brain injury and a gnarly scar on the back of his head. He was 16.

In the ensuing 10-plus years, physical and occupational therapy helped him, to an extent. But when he met Carolayn Crane, neuro-specialist, master Pilates instructor and owner of Pyour Core Pilates Studio in Ship…