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Kayla’s THR zone is 126bpm - 159bpm. Kristen’s THR zone is 124bpm - 156bpm. They finish a long tennis rally and take their pulse and both count their heart rate at 157bpm. Who must decrease their heart rate to remain in her THR zone?

User MuSTaNG
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1 Answer

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Kristen because she is above her THR of 156, putting her health at risk.
User Rutgersmike
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