The definition of HIIT is intervals of max effort/heart rate followed by intervals of active recovery. But how do you know what your max heart rate is?
A good estimate is 220 minus your age.
So check out your fitness watch from your latest SURGE workout and see if you got there.
Give us a thumbs up! Or even better, post your SURGE stats and tag us, use #surgestats
FEEL THE SURGE!
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