Heart Rate terms

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Across
  1. 2. #of beats when at rest___
  2. 4. mathematical formula to find training zone
  3. 5. heart benefits most when exercising___
  4. 7. number of heartbeats per unit of time_____
  5. 9. HR measured post exercise____
Down
  1. 1. highest number your heart can contract
  2. 3. exercise without oxygen____
  3. 6. 220-age is what type of formula_____
  4. 8. exercise with oxygen____