Answer:
the 1st one
Explanation:
bc the SECOND one is kinda freaky
C. can take the place of long-term goals
Hope this helps, mate!
<span>Heart Rate Reserve, HRR. Heart rate reserve (HRR) is the difference between resting heart rate (HR<span>rest) and maximum heart rate</span> (HRmax). Heart rate reserve is used when determining exercise heart rates. The Karvonen formula is used to calculate exercise heart rate at a given percentage training intensity.</span>
