Question

Your ____________________ is the number of extra heart beats you have to spare in one minute.

A.
resting heart rate

B.
maximum heart rate

C.
target heart rate

D.
heart rate reserve

Answer 1

I'm pretty sure it's D=heart rate reserve ;)

Step-by-step explanation:

:)

Answer 2

Target heart rate? Your heart rate has a comfort zone so usually when you go above that zone which meant by the extra heart beats

Sorry if this is wrong but I barely could find information and if it’s wrong probably maximum heart rate