Physical Activity

2. frequency, intensity, time, type
3. injury to a ligament
5. serious condition in which your heat-regulating mechanisms cannot deal with the heat from the environment, causing high body temperature
7. opposition
8. type of brain injury that results from a blow or jolt to the head or upper body
12. ability to continue performing a physical activity over time
13. ability to rapidly change direction
15. number of heartbeats per minute that is safe and effective
17. amount of energy the body uses per minute of activity
19. brain chemicals released during physical activity that improve mood
21. anaerobic activities done in groups followed by rest
22. any action in which the body uses energy
24. type of fitness that improves a sport or activity

1. behavior that consists of sitting or lying down
4. powering the body without oxygen
6. serious condition in which a person loses body heat faster than it can make it
9. number of beats per minute when working your hardest
10. broken bone
11. type of fitness a person needs to perform daily activities
14. using oxygen to break down energy for muscles
16. injury caused by freezing skin and body tissues
18. bones are moved out of normal position
20. planned physical activity to increase fitness
23. person's heart rate