Question

Select the correct answer.

What two things can you use to determine how hard your body is working?
A.
Heart rate and muscle stiffness

B.
Rate of perceived exertion and breathing rate

C.
Muscle stiffness and breathing rate

D.
Heart rate and rate of perceived exertion

Answer 1

C

Muscle stiffness and breathing rate

Answer 2

D Heart rate and rate of perceived exertion

Step-by-step explanation: