Fitness crossword

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Across
  1. 1. using no oxygen for energy
  2. 5. exercise too much
  3. 7. power
  4. 8. Time that is consistent
  5. 9. strength Using strength in an exercise
Down
  1. 2. using oxygen for energy
  2. 3. A challenge for an exercise
  3. 4. Stretch
  4. 6. Heart and blood vessels