The investigators are interested in finding accessible interventions for youth and young adults that help promote long-term positive mental health functioning. They will be investigating the effects of Team Unbreakable, a 13-week, twice weekly running group, on mental health symptoms, memory, and attention. This intervention will hopefully improve mental health functioning in youth aged 17-25 that are at high risk of developing mental health disorders. Sessions will consist of 30 minutes of running under the supervision of group leaders and coaches. The group will steadily increase the distance and time spent running versus walking, with the goal of having everyone run a 5 km race together at the end of 13 weeks. Once a week, youth will be provided with education on a variety of topics related to health and running. Youth will complete measures before, during, and after the program to assess outcomes.