How to stay healthy during flu season

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Across
  1. 3. what you need to eat to support immunity.
  2. 6. you have to do this evry night for at least 7h.
  3. 7. which vitamin supports muscles and nerves.
Down
  1. 1. you must drink at least 2 liter of it a day.
  2. 2. you have to wash them for at least 20 seconds.
  3. 4. you have to wear it around sick people..
  4. 5. you have to do this to strengthen your body.