An Occupational therapy lab at Washington University School of Medicine is recruiting participants in the St. Louis area that are suffering from Post-Traumatic Stress Disorders or Mild Traumatic Brain injury after they did service in Iraq or Afghanistan. The study will look at how horses can help these individuals with these conditions. The individuals that are recruited for this study will be interacting with the horses in a therapy setting. The patients will be riding the horses or grooming the horses—even as little as just spending time around a horse. According to Julia Sanders, a three-year student, “It has been shown that horses can really calm down the effects of PTSD. Sanders stated that V.A. hospitals have used “hippo-therapy” in treating veterans with brain injuries, but no data is available to show details or findings.