However, note that other causes of the symptom 'Muscle mass loss' may be possible. Research the causes of these symptoms that are more broader types of symptom than Muscle mass loss: Muscle atrophy (351 causes)
intrinsic meaning, definition, what is intrinsic: being an extremely important and basic characteristic of a person or thing: . Learn more.
Updated July 04, 2016. Intrinsic motivation refers to behavior that is driven by internal rewards. In other words, the motivation to engage in a behavior arises from within the individual because it is intrinsically rewarding.