Early Birds

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Across
  1. 2. Opposite of early birds
  2. 4. Internal clock that affects sleep patterns
  3. 6. The feeling when early birds get enought sleep
  4. 8. People who like to wake up early
  5. 9. Feeling of being full of energy
Down
  1. 1. Activities like watching movies or socializing
  2. 3. To have a period of sleep
  3. 5. Routine followed daily
  4. 7. To engage in physical activity