Crossword Challenge

1. Uncontrollable growth of abnormal cells
5. A type of physical activity program in which the person performs a group of exercises in a sequence with brief rests between exercises
6. An increase in muscle size
7. A yellowing of the skin and eyes
10. A disease in which the bones deteriorate and become weak
15. A burning sensation in the center of the chest that may rise from the bottom of the breastbone up to the throat
16. Food that is high in calories but low in nutritional value
18. Something you aim for that takes planning and work
19. The time when a person begins to develop certain traits of adults of his or her own gender

1. An instrument used to measure skinfold thickness
2. A nutrient needed for growth and repair of body cells
3. Voice box
4. Physical activity in which short bursts of high-intensity exercise are alternated with rest periods
8. Positive stress
9. The part of the physical activity program during which a person does activities to improve fitness
11. A complex set of characteristics that makes you unique
12. Someone whose success or behavior serves as an example for others
13. An abnormal lateral curvature of the spine
14. A global outbreak of infectious disease
17. Deliberate deceit or trickery