Resistance training crossword

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Across
  1. 5. this is crucial for recovery after exercise
  2. 7. this type of training is gooc for the heart
  3. 9. exercise improves the function of this unexpected organ
  4. 10. you have to keep _____ during exercise
  5. 11. this may lack in the elderly who don't exercise
  6. 12. resistance training helps us remain ______
Down
  1. 1. these get bigger when we train
  2. 2. exercise is proven to improve you ____
  3. 3. this type of training is important in the elderly
  4. 4. controlling this
  5. 6. eating this help you retain/grow your muscles
  6. 8. we need this to train