Sleep & Fitness

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Across
  1. 2. a central nervous system stimulant found in tea and coffee
  2. 4. _ disease is the leading cause of death in america
  3. 10. the _ decade is the last 10 years of your life
  4. 12. minimum number of hours of sleep that a teenager needs
  5. 14. brain structure responsible for memory
  6. 16. brain cell death characterized by memory loss
  7. 18. a hormone that your brain produces in response to darkness.
  8. 19. exercise that relies on oxygen for primary energy source
Down
  1. 1. how long we live free from chronic disease or other health problems
  2. 2. a hormone produced by the adrenal gland
  3. 3. a unit to measure intensity of light exposure to the human eye
  4. 5. maximum amount of oxygen that an individual can utilize during intense or maximal exercise
  5. 6. _ minutes per day is how much exercise a teen should get
  6. 7. exercise that requires short sudden bursts of energy
  7. 8. a substance capable of causing cancer
  8. 9. carry oxygenated blood away from the heart
  9. 11. carry deoxygenated blood back to the heart
  10. 13. a neurotransmitter responsible for rewarding behavior
  11. 15. temporary paralysis of the muscles during rem sleep
  12. 17. brain neurotransmitter that causes sleepiness