UTMB’s behavioral-science researcher and assistant professor Elizabeth Lyons is studying how effective the smartphone app “Zombies, Run!” is at increasing the activity level of its users. Lyons recently received a $140,000 grant from the American Heart Association. The app designed to be used by walkers or joggers, and each of its audio “missions” is accomplished by actually walking or running, as monitored by a smartphone’s GPS or accelerometer.