 The COVID-19 pandemic has led to changes in physical activity, PA, and sedentary behavior, SB, among U.S. children. A study conducted between April 25 to May 16, 2020, found that children engaged in less PA and more SB during the early COVID-19 period compared to the pre-COVID-19 period. Free play slash unstructured activity and going for a walk were the most common physical activities during the early COVID-19 period. Children spent about 90 minutes of school-related sitting and over eight hours of leisure-related sitting a day. Parents of older children perceived greater decreases in PA and greater increases in SB from the pre- to early COVID-19 periods. About a third of children used remote slash streaming services for activity classes and lessons during the early COVID-19 period. The study suggests that short-term changes in PA and SB may become permanently entrenched, leading to increased risk of obesity, diabetes, and cardiovascular disease in children. Programmatic and policy strategies should be geared towards promoting PA and reducing SB over the next 12 months. This article was authored by Genevieve F. Dunton, Bridget Due, and Shirlene D. Wong. We are article.tv, links in the description below.