Answer:
Flexibility is the ability to move muscles and joints through a full normal range of motion (ROM). Flexibility helps performance, posture, promotes efficient movement, prevents incorrect body alignment, maintains appropriate muscle length and balance and also decreases injury risk.
Explanation:
Your brain has nerves and those nerves run throughout your system so in that case your central nervous system control everything. It is like a director it tells your heart to pump blood it signals everything it even control your homeostasis and reflex.
Answer:
Use the machine to maintain or decrease her intensity
I would have to guess TRUE because cardiac means heart.