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Physical fitness is a state of health and well-being and, more specifically, the ability to perform aspects of sports, occupations and daily activities. Physical fitness is generally achieved through proper nutrition, moderate-vigorous physical exercise, and sufficient rest.
Before the industrial revolution, fitness was defined as the capacity to carry out the day’s activities without undue fatigue. However, with automation and changes in lifestyles physical fitness is now considered a measure of the body’s ability to function efficiently and effectively in work and leisure activities, to be healthy, to resist hypokinetic diseases, and to meet emergency situations.
Fitness is defined as the quality or state of being fit. Around 1950, perhaps consistent with the Industrial Revolution and the treatise of World War II, the term “fitness” increased in western vernacular by a factor of ten. The modern definition of fitness describes either a person or machine’s ability to perform a specific function or a holistic definition of human adaptability to cope with various situations. This has led to an interrelation of human fitness and attractiveness that has mobilized global fitness and fitness equipment industries. Regarding specific function, fitness is attributed to persons who possess significant aerobic or anaerobic ability, i.e. endurance or strength. A well-rounded fitness program improves a person in all aspects of fitness compared to practicing only one, such as only cardio/respiratory endurance or only weight training.
A comprehensive fitness program tailored to an individual typically focuses on one or more specific skills, and on age- or health-related needs such as bone health. Many sources also cite mental, social and emotional health as an important part of overall fitness. This is often presented in textbooks as a triangle made up of three points, which represent physical, emotional, and mental fitness. Physical fitness can also prevent or treat many chronic health conditions brought on by unhealthy lifestyle or aging. Working out can also help some people sleep better and possibly alleviate some mood disorders in certain individuals.
Developing research has demonstrated that many of the benefits of exercise are mediated through the role of skeletal muscle as an endocrine organ. That is, contracting muscles release multiple substances known as myokines, which promote the growth of new tissue, tissue repair, and various anti-inflammatory functions, which in turn reduce the risk of developing various inflammatory diseases.
The Physical Activity Guidelines for Americans were created by the Office of Disease Prevention and Health Promotion. This publication recommends that all adults should avoid inactivity to promote good health mentally and physically. For substantial health benefits, adults should participate in at least 150 minutes a week of moderate-intensity, or 75 minutes a week of vigorous-intensity aerobic physical activity, or an equivalent combination of moderate- and vigorous-intensity aerobic activity. Aerobic activity should be performed in episodes of at least 10 minutes, and preferably, it should be spread throughout the week.
New (July 2011) guidelines in the United Kingdom include the following points: The intensity at which we exercise is key, and light activity such as strolling and housework is unlikely to have much positive impact on the health of most people. For aerobic exercise to be beneficial it must raise your heartbeat and make you sweat. The more exercise you do, the better. Everyone should do a minimum of 150 minutes a week of moderate-intensity aerobic exercise but that really is the minimum for health benefits. If you can go beyond 150 minutes, you’ll gain even more health benefits. Sedentary time (time spent sitting down to watch TV, use a computer, read or listen to music) is bad for your health, even for those who are achieving 150 minutes of exercise a week. These guidelines, are now much more in line with those used in the US, also include recommendations for muscle-building and bone strengthening activities such as lifting weights and yoga.<https://www.nhs.uk/news/lifestyle-and-exercise/major-new-exercise-guidelines-announced/>
The US guidelines continue: For additional and more extensive health benefits, adults should increase their aerobic physical activity to 300 minutes (5 hours) a week of moderate-intensity, or 150 minutes a week of vigorous-intensity aerobic physical activity, or an equivalent combination of moderate- and vigorous-intensity activity. Additional health benefits are gained by engaging in physical activity beyond this amount. Adults should also do muscle-strengthening activities that are moderate or high intensity and involve all major muscle groups on 2 or more days a week, as these activities provide additional health benefits.
Midland is a city in the U.S. state of Michigan in the Tri-Cities region of Central Michigan. It is the county seat of Midland County. The city’s population was 41,863 as of the 2010 census. It is the principal city of the Midland Micropolitan Statistical Area, part of the larger Saginaw-Midland-Bay City Combined Statistical Area. In 2010, Midland was named the no. 4 Best Small City to raise a family in by Forbes magazine.
By the late 1820s, Midland was established as a fur trading post of the American Fur Company supervised by the post at Saginaw. Here agents purchased furs from Ojibwe trappers. The Campau family of Detroit operated an independent trading post at this location in the late 1820s.
The Dow Chemical Company was founded in Midland in 1897, and its world headquarters are still located there. Through the influence of a Dow Chemical plant opening in Handa, Aichi, Japan, Midland and Handa have become sister cities. The Dow Corning Corporation and Chemical Bank are also headquartered in Midland.
In 1969 the city unilaterally defined a Midland Urban Growth Area (MUGA), which at the time was a territory two-miles around the city limits of Midland in an attempt to control urban sprawl.  The central policy was that as the only capable supplier of drinking water, the city would provide water services to commnities outside the MUGA such as the nearby village of Sanford, but would not provide to water services to the area within the MUGA without annexation to the city of Midland thus controlling most of the growth in the county. Since 1991 however, the policy has since been revised with a series of Urban Cooperation Act Agreements with surrounding townships which has allowed case-by-case redrawings of the MUGA line to allow Midland to sell water to the surrounding townships without annexation.