bend don't break

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Across
  1. 3. good to have (helps keep bridges up)
  2. 4. show your pearly whites
  3. 8. coconuts come on these
  4. 9. use the head for this
  5. 10. workmen use these
  6. 12. strong arms
  7. 13. drinks in a tin
Down
  1. 1. type of relaxation
  2. 2. a good way of going, you feel ...
  3. 5. the heart rules these
  4. 6. bend don't break
  5. 7. not worse
  6. 8. plus on a battery
  7. 10. strong,
  8. 11. don't break