TCTSY is the first yoga-based, empirically validated clinical intervention for complex trauma and chronic, treatment-resistant post-traumatic stress disorder (PTSD). Developed at the Trauma Center in Brookline, Massachusetts by Dave Emerson and others, it is now a program of the Center for Trauma and Embodiment at the Justice Resource Institute.

Rooted in trauma theory, attachment theory, neuroscience, and hatha yoga, TCTSY emphasizes body-based yoga practices and breathing techniques. This approach helps individuals heal by reconnecting with their bodies, processing trauma, and cultivating a sense of safety and agency.