This article explains why traditional “rest until healed” advice is outdated and how early, guided movement can actually speed recovery after injury or surgery. Research shows that controlled motion improves blood flow, reduces stiffness, prevents muscle loss, and helps tissues heal stronger. While certain post-surgical cases still require temporary rest, most people benefit from a balanced, progressive approach called optimal loading. Physical therapists help determine what movements are safe, how to progress activity, and how to restore strength and confidence. The key message: rest protects, but movement heals — and physical therapy ensures you move at the right time and in the right way.