8pe2

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Across
  1. 3. Exercise helps you ...... at school
  2. 6. Teenagers need one ...... of exercise a day
Down
  1. 1. An organ i the respiratory system
  2. 2. Exercise can boost this and make you feel better
  3. 4. You have quadriceps muscles in your ......
  4. 5. This beats faster when you exercise