This chapter examines the interdisciplinary foundations of trauma-informed yoga as practiced and studied within carceral settings. Bridging the fields of somatic psychology, neuroscience, contemplative practice, and abolitionist pedagogy, it explores how trauma-informed yoga operates as both an embodied intervention and a theoretical framework for healing in systems designed to punish. Through qualitative research with incarcerated practitioners, the chapter illustrates how mindful movement, breathwork, and ethical relationship coalesce into a powerful modality for self-regulation and resilience. By integrating academic theory with grounded lived experience, it reveals the nuanced ways in which trauma-informed yoga interrupts cycles of dysregulation and dehumanization. Emphasizing iterative practice, community feedback, and cultural humility, this chapter invites readers to consider how research and practice must evolve together rooted in justice, accountability, and care. Ultimately, it offers a blueprint for healing work that is not only evidence-informed but soul-aware.