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Across 5. to do something well and at ease 7. Aches 8. Health 9. Lactic Acid 10. Oxygen 14. Muscle Fibres is one of the structural cells in the muscle 15. Blood 17. Agility 18. Safety 19. if you are this you will be able to do sport and other physical activities easily 20. Carbon

Down 1. exercise 2. Joints 3. Time 4. what you should do to warm up before and after sport 6. an activity that affects the heart and blood vessels 11. you need this to lift heavy things and do push ups 12. Muscles 13. An exercise that does not involve you using oxegyn 16. Hygiene