Why are we so tired?

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Across
  1. 3. frequent changes humour
  2. 5. if there Is a fire you___ the fire alarm
  3. 6. Synonym of little
  4. 7. destitute
  5. 8. to look at or examine
  6. 11. Synonyme of confusion
  7. 12. unsteady
Down
  1. 1. when you do accident
  2. 2. when you have no more strength
  3. 4. after my mom face surgeries she_____
  4. 9. up if you win something nice you are____
  5. 10. Something or a situation that is miserable