Muscles are also necessary for movement: They're the masses of tough, elastic tissue that pull our bones when we move. Together, our bones, muscles, and joints — along with tendons, ligaments, and cartilage — form our musculoskeletal system and enable us to do everyday physical activities.
Answer:
*F- frequency- days per week
*I- intensity- %(percentage) of 1RM
*T- time-
Explanation:
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<span>C. its purpose is the answer.</span>
