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emerging from the swim portion of a Triathlon .]]
Physical exercise is activity that develops or maintains ability or skill. Frequent and regular physical exercise is an important component in the prevention of some of the Diseases Of Affluence such as Heart Disease , Cardiovascular Disease , Type 2 Diabetes and Obesity .Stampfer, M., Hu, F., Manson, J., Rimm, E., Willett, W. (2000) Primary prevention of coronary heart disease in women through diet and lifestyle. ''The New England Journal of Medicine, 343''(1), 16-23. Retrieved October 5, 2006, from ProQuest database.Hu., F., Manson, J., Stampfer, M., Graham, C., et al. (2001). Diet, lifestyle, and the risk of type 2 diabetes mellitus in women. ''The New England Journal of Medicine, 345''(11), 790-797. Retrieved October 5, 2006, from ProQuest database.'' It is also correlated with mental health promotion and depression prevention.


TYPES OF EXERCISE

Exercises are generally grouped into three types depending on the overall effect they have on the human body:

  • Flexibility exercises such as Stretching improve the range of motion of Muscle s and joints.O'Connor, D., Crowe, M., Spinks, W. 2006. Effects of static stretching on leg power during cycling. ''Turin, 46''(1), 52-56. Retrieved October 5, 2006, from ProQuest database.

  • Aerobic Exercise s such as Cycling , Walking and Running focus on increasing Cardio vascular endurance.Wilmore, J., Knuttgen, H. 2003. Aerobic Exercise and Endurance Improving Fitness for Health Benefits. ''The Physician and Sportsmedicine, 31''(5). 45. Retrieved October 5, 2006, from ProQuest database.

  • Anaerobic Exercise s such as Weight Training , Functional Training or Sprinting increase short-term muscle strength.de Vos, N., Singh, N., Ross, D., Stavrinos, T., et al. 2005. Optimal Load for Increasing Muscle Power During Explosive Resistance Training in Older Adults. ''The Journals of Gerontology, 60A''(5), 638-647. Retrieved October 5, 2006, from ProQuest database.



EXERCISE BENEFITS


Physical exercise is important for maintaining Physical Fitness and can contribute positively to maintaining a healthy weight; building and maintaining healthy bone density, muscle strength, and joint mobility; promoting physiological well-being; reducing surgical risks; and strengthening the immune system.

Frequent and regular aerobic exercise has been shown to help prevent or treat serious and life-threatening chronic conditions such as High Blood Pressure , Obesity , Heart Disease , Type 2 Diabetes , Insomnia , and Depression . Strength Training appears to have continuous energy-burning effects that persist for about 24 hours after the training, though they do not offer the same cardiovascular benefits of aerobic exercises. Exercise can also increase energy and raise one's threshold for Pain .

There is conflicting evidence as to whether vigorous exercise (more than 70% of VO2 Max ) is more or less beneficial than moderate exercise (40 to 70% of VO2 Max ). Some studies have shown that vigorous exercise executed by healthy individuals can effectively increase Opioid Peptides (aka endorphins, a naturally occurring opiate that in conjunction with other neurotransmitters is responsible for exercise induced Euphoria and has been shown to be addictive), positively influence hormone production (i.e., increase testosterone and growth hormone) Hanc, J. 1987. Your Health Behind the Runner\'s Euphoria. \'\'Newsday, April 21, 1987,\'\' 11. Retrieved October 5, 2006, from ProQuest database. benefits that are not as fully realized with moderate exercise.