Exercise crossword

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Across
  1. 4. a natural substance that can be burned to create energy
  2. 6. the strength and vitality required for sustaining physical and mental activity
  3. 9. an amount of food with heat and energy producing qualities
  4. 10. A part of your body that gains physical power
Down
  1. 1. a chemical element that is the life support of most living being
  2. 2. a hollow muscular organ that pumps blood
  3. 3. the basis of the fluids of living organisms
  4. 5. relating to involving free oxgen
  5. 7. activity requiring physical effort
  6. 8. a food group that consists of meats seafoods and eggs