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Across 3. Extending the body longer. 5. Consisting of carbon, hydrogen and oxygen atoms. 6. Anterior thigh muscle that causes extension at the knee. 10. Good physical condition. 11. A tissue in your body that forms when you get strong. 13. Being free from an illness or injury. 15. Substances in food to produce growth, reproduction, health and disease of an organisms. 16. A sport which you kick a ball without using your arms. 18. Muscle group that extends the thigh and flexes the knee. 19. A sport which you can stretch long and do flips.

Down 1. Units of heat that measure the energy used by the body and the energy that foods supply to the body 2. Instruction in physical exercise and games. 4. A sport which you can foul other players. 7. A sport which you do strokes in the water. 8. A sport which you run with the ball and kick it into the goals. 9. An activity requiring physical effort carried out to sustain or improve health and fitness. 12. The muscles that allow you to extend, or straighten your arms. 13. One of the main parts of your body that pumps blood. 14. Flexes the elbow and extends the shoulder. 17. A material in your body.