1. during really easy workouts, you work out at the lowest end of your target heart rate zone. what should the words in italics be replaced with to make this sentence more precise?

high frequency
low intensity
high intensity
low frequency

2. daisy has added 30 minutes of rowing and 20 minutes of running to her fitness routine. these activities are most likely going to improve her

physical composition
muscle fitness
cardiorespiratory fitness
flexibility

3. to target different goals and muscle groups, what should you do?

alternate workouts
run quickly each morning
do yoga in the evenings
drink water and sports drinks