01/16/2026
After weeks or months of inactivity, the body adapts in ways that make a rapid return to exercise risky. This evidence-based guide explains how to rebuild fitness, strength, and resilience safely while minimizing injury and long-term health consequences.
This encyclopedic article explains how prolonged inactivity affects cardiovascular, muscular, and connective tissue systems and why abrupt return to exercise increases injury and health risks. It synthesizes current evidence to outline safe, progressive strategies for restoring aerobic fitness, stre...