Mindful Yoga Therapy (MYT)is a 12-week treatment protocol incorporating meditation, breathing exercises, mindful movement practice, and guided rest (yoga nidra) that has been developed specifically for Veterans with PTSD. This pilot randomized clinical trial with cross-over waitlist comparison (RCT) will compare Immediate Mindful Yoga Therapy (MYT) plus Treatment as Usual (TAU) with Delayed MYT + TAU. Baseline (week 0), 12-week, and 24-week assessments, in addition to 36-week assessments for the delayed MYT treatment group, will include diagnostic, neurocognitive, and psychophysiological measures conducted by a research team member blinded to treatment condition.