Tim O'Neal

Tim O'Neal headshot

Tim O'Neal


School: Milken Institute School of Public Health

Department: Exercise and Nutrition Sciences

Tim proudly served in AmeriCorps NCCC. He started his career as a registered dietitian for WIC. He completed a dual MS in Nutrition & Exercise at San Diego State University. There, his research focused on how tree nut consumption affected athletic performance. Before starting at GWU, Tim worked as a clinical exercise physiologist in cardiac rehab at Boulder Community Hospital. Tim is a Redstone Fellow and his current research interests include chronic disease prevention via lifestyle interventions. One research project examines how participation in a team-based running and adult mentorship program affects mental health outcomes in DC adolescents. Another examines how the COVID pandemic affected American exercise behaviors. A final project studies undergraduate student health behaviors. Tim is a personal trainer and group fitness instructor. He leads exercise classes for older adults that focus on maintaining strength, preventing falls, and promoting independent living.