Clinical Scenario: Currently, rest following concussion serves as the keystone of concussion treatment, but substantial evidence to support it is lacking. Recent literature suggests that early physical activity may be beneficial in reducing concussion symptoms which may influence clinical recovery time. Clinical Question: Does early physical activity decrease postconcussion symptoms compared to physical rest following concussion? Summary of Key Findings: A total of 5 articles were included that examined symptom duration changes at multiple time points. All 5 studies utilized follow-up time points compared to initial examination, but there was variance in the specific time points reported. Two studies employed control groups and compared strict or recommended rest to early activity or limited rest. Three studies were observational studies that directly compared baseline measurements to follow-up assessments. Clinical Bottom Line: Current evidence suggests that early physical activity in the acute phase following a concussion may decrease the time needed for symptom resolution compared to immediate rest. Strength of Recommendation: Using Centre for Evidence-Based Medicine 2011 level 3 evidence and higher, the results suggest that early physical activity during the acute phase of a concussion may decrease symptom duration; however, a lack of high-quality studies and inconsistent interventions are limitations to this recommendation.