In simple terms, it means that your body will adapt to the demand you impose on it. The Overload Principle is considered the most important concept in exercise. Principle work together, so let’s review these first. a law or fact of nature that explains how something works or why something happens.įortunately, exercise science gives us five basic principles we can incorporate into a fitness program that will develop the changes, or “adaptations” we desire, in a safe and lasting way. an idea that forms the basis of something 3. But not just any plan, such as “I’m going to run 5 miles every day” or “I’ll lift the heaviest weight I can every time I work out.” Your body is an amazing machine that responds to specific stimuli in distinct ways, and your brain is constantly working to protect the body from threats – like way too much stress on the muscles and tendons from continuous all-out hard exercise. The best way to achieve optimum results in exercise and fitness is to follow a plan.