Fitness crossword

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Across
  1. 2. Bursts of intense heart rate
  2. 4. working on specific parts
  3. 8. Working more often and harder than your used to
  4. 9. decreasing movement to lower heart rate
  5. 10. Tearing of muscle or tendon
  6. 12. heart, lungs, and vessels
Down
  1. 1. Eating food with no nutrients
  2. 3. General first aid
  3. 5. bpm
  4. 6. Gaining improvement
  5. 7. Bruised muscle
  6. 11. Slow movement to raise heart rate