Physical Activity Intervention for Young Cancer Survivors

The intervention will use peer mentors, motivational interviewing, and technology (Fitbit, Fitbit Coach App, \& Fitbit message board) to support behavior change. All participants will receive phone or video calls from their peer mentors every other week, and interact with their peer mentor and other participants through a private Fitbit message board at least weekly. Peer mentors will use Fitbit data to identify participants who need additional support to increase their activity.