Hold your breath to find your target heart rate, then be calm until ur heart beat slows until it's the slowest, that's ur resting heart rate
Answer:
The muscular system is an organ system consisting of skeletal, smooth and cardiac muscles. It permits movement of the body, maintains posture and circulates blood throughout the body. ... Together with the skeletal system, it forms the musculoskeletal system, which is responsible for movement of the human body.
Explanation:
took the quiz
The answer is Twice a year
Answer:
echo
Explanation:
Due to reflection of our sound