Concussion, a form of traumatic brain injury, is a common injury among children and teens. Concussions can have adverse effects on physical, cognitive, emotional and sleep health. Clinical guidelines for managing concussion in children and teens traditionally recommend complete physical and cognitive rest until symptom resolution, followed by a gradual return to activities like school and sports. These guidelines are often disputed and based on expert consensus as opposed to strong evidence. The challenge has been how to quantify the amount of physical and cognitive activity that children and teens should engage in during recovery. A new study by researchers at the Center for Injury Research and Policy, Sports Medicine, and Emergency Medicine at Nationwide Children’s Hospital investigated objectively measured, self-paced physical and cognitive activity across the first week post-concussion.