Target heart rate is question 14 options: a. desirable minimum heartbeats needed to reach a level of activity and maintain that heart rate necessary to improve your cardiovascular fitness. b. a heart rate monitor you purchase at target c. number of contractions of the heart that occur in a one minute when your body is at rest. d. the amount of heartbeats when you wake up what is cardiovascular fitness? a. the heart and lungs are both at rest b. the muscles and heart competing for blood to use c. the ability of the heart and lungs to take blood from the muscles d. the ability of the heart and lungs to deliver oxygen to the muscles during exercise