Not necessarily. It usually only shows the probable health risks that a person has.
The answer is Protein. T<span>he primary type of macromolecule in the actin and myosin that make up muscle cells is Protein. </span>Muscles<span> are composed of two major protein filaments: a thick filament composed of the protein </span>myosin<span> and a thin filament composed of the protein </span>actin<span>. </span>Muscle contraction<span> occurs when these filaments slide over one another in a series of repetitive events.</span>
Answer:
repetitive force
Explanation:
repetitive forces like jumping up and down
and running long distances which cause tiny cracks in the bone.
Your heart rate goes up and can possibly cause a heart attack
