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Across 4. Someone in good health, especially because of regular physical exercise. 5. Achieving maximum productivity with minimum wasted effort or expense. 7. A colourless, transparent, odourless, liquid which forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms. 8. Having well-developed muscles. 10. Exercises used to improve your bodies cardiovascular system in inhaling and exhaling oxygen.

Down 1. Conditions or practices conducive to maintaining health and preventing disease, especially through cleanliness. 2. Concerned with bodies at rest or forces in equilibrium. 3. Highly unpleasant physical sensation caused by illness or injury. 6. The ability to endure an unpleasant or difficult process or situation without giving way. 9. The condition of being protected from or unlikely to cause danger, risk, or injury.