Reserve capacity theories

Reserve capacity theories suggest that the body maintains extra, unused capacity in organs, muscles, and systems to ensure it can respond effectively to stress, injury, or increased demands. This "reserve" acts as a buffer, allowing for quick adaptation without immediate failure. For example, your heart can pump more blood during exercise than it does at rest, thanks to this reserve. These theories highlight how our bodies are designed with built-in flexibility and strength, enabling resilience and optimal functioning during periods of strain or emergency.