* Abbreviations: HRQoL — : health-related quality of life MVPA — : moderate-vigorous physical activity The public health, medical, and research community has increased focus on childhood obesity over the past few decades and for good reason. Obesity prevalence is at an all-time high,1 and rates of severe obesity continue to increase.2 Activity, both sedentary and physical, are key contributors to the development and treatment of obesity.3–5 Increasing physical activity while decreasing sedentary activity is an obvious goal in improving the weight and health of children. Unfortunately, the majority of children in the United States are not receiving the recommended amounts of physical activity and surpassing suggested limits on sedentary activity.6 Because there are finite hours in a day, increasing time spent on 1 activity will require doing less of another (ie, replacing one activity with another). In the case of activity, it is assumed that increased time spent engaged in physical activity is always beneficial, without the recognition that it may detract from other important life and health components (eg, sleep and school work). Exploring how individuals allocate their time may provide insight into how one can increase time spent in a beneficial behavior (eg, exercise), without stealing that time from an activity that is also beneficial (eg, sleep). In their study, Ng et al7 approached this topic through the lens of time and in relation … Address correspondence to Michelle I. Cardel, PhD, MS, RD, Department of Health Outcomes and Biomedical Informatics, College of Medicine, University of Florida, 2197 Mowry Rd, Gainesville, FL 32607. E-mail: mcardel{at}ufl.edu