Answer:
Subtract your heart's resting rate from your maximum rate. For example, if you are 40 years old, subtract that number from 220; your maximum rate is 180. Next, subtract your resting rate or 80 in this example. Your heart-rate reserve is 100 beats per minute.
Answer:
located in the same place
Explanation:
Answer:Pedometer
Explanation:bc it counts how much steps you took but also shows how much your heart is beating
It's mite be c or a if not then b definitely
STDs are infections spread from person to person during sexual contact.
