D. physics
Physics is a field of study contributes ideas and concepts to biomechanics.
Answer:
physically fitness
Explanation:
physically fitness means the condition in which all of the body parts and organs are free from disease.At the same time, physically fitness denotes physical health in which all of the body organs function well.
<span>According
to the SAID principle, if the demands placed upon a muscle cause it to
become stressed, then there exists a chance that the muscle will weaken.
-False
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