Sedentary behavior is defined as a set of low-intensity activities involving limited body movement (e.g.: TV viewing, prolonged sitting). TV viewing is associated with lower cognitive functioning and depressive symptoms. Some studies found higher levels of childhood sedentary behavior predicted higher body mass index (BMI) and cholesterol in adulthood, suggesting that negative health consequences may begin early. Dunstan et al. conducted the first lab-based study in adults investigating interrupting prolonged sedentary behavior with physical activity breaks. The authors found that for overweight adults, adding 2-minute moderate-intensity walking breaks every 20 minutes reduced postprandial insulin and glucose responses by 23.0% and 29.6%, respectively. Thus, interrupting sedentary behavior may be an intervention strategy to reduce health risks.