Exercise as a recreational activity is relatively modern development. In the past, many aspects of life in and out of the home involved physical labor. Now, relatively few occupations involve such labor, and physical activity has become associated with recreational exercise.
The Different Types Of Activity
The energy for this activity comes from the two systems for different types of activity. The anaerobic system, which does not require oxygen, provides energy for short-term activity of moderate intensity. This system uses glycogen (glucose) from food as the fuel source. It is the major source of energy for the first minute and a half of exercise.
Beyond the second minute of exercise, the oxygen-using aerobic system, for endurance activities, predominates. The aerobic system requires glycogen, fats, and proteins for fuel sources. Exercise that depends on stamina and endurance uses the aerobic system and has been found to contribute more to cardiovascular health. Most daily activities are aerobic since they require little power and occur over prolonged periods, but heavy labor is usually both aerobic and anaerobic.
Regular exercise helps keep younger people in shape, in areas such as weight maintenance, heart rate, lung capacity, and cholesterol and blood pressure levels. People who exercise regularly are more likely to continue to exercise throughout their lives. As people age, the benefits of regular exercise grow more important. While genetics plays a role in the effects of aging, exercise has a beneficial effect on the aging body, helping to maintain fitness and slow down the physical effects of aging. The body becomes deconditioned with age and, if not properly exercised, can develop significant problems in the muscles, bones, and cardiovascular system.
Muscles wither away and lose their tone, leading to more frequent tearing of muscle tendon units. Bones become weak and brittle, fracturing easily and more often. The cardiovascular system adjusts down to the point where any little chore can cause an increase in the pulse rate and blood pressure and earlier development of atherosclerosis.
The Benefits Of Regular Exercise
High blood pressure, heart disease, and high cholesterol work together in the development of cardiovascular disease. Regular exercise is believed to protect against cardiovascular disease, especially myocardial infarction. Of major importance is the consistent finding that being physically active does not increase an individual's chance of cardiovascular disease. Exercise has been shown to lower cholesterol levels while increasing the level of high-density lipoproteins, the so-called "good" cholesterol.
A good proportion of the U.S. population is obese, and the major cause is lack of physical activity. Most sensible weight loss programs now recommend a combination of diet, nutritional supplements, and exercise. I call this the complete 3 point program. The combination of the three ingredients of nutrition, nutritional supplements, and exercise has guaranteed results.
About The Author
John DeFendis is a contributing writer for the forum newspaper. He is a former Mr. U.S.A. and has been featured on "ABC T.V.'s 20/20", "good morning america", and "the joan rivers show". He has been a trainer for over 20 years and is the director of exercise with the ifpa. He developed the burn fat build muscle pack and can be contacted at (561) 968-6578.