You've determined that Ben should be working at or above 80 to 90% of his maximal heart rate. He's 21 years old. Calculate Ben's training target heart rate and then tell me which option shows the correct range:
a. 120 to 137 bpm b. 159 to 179 bpm c. 180 to 191 bpm d. 200 to 225 bpm
You've determined
that Ben should be working at or above 80 to 90% of his maximal heart rate. He's 21 years old.