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    Merriam Webster
    https://www.merriam-webster.com › dictionary › exercise

    Exercise Definition & Meaning - Merriam-Webster

    What does Thesaurus exercise mean?
    THESAURUS exercise to walk, do sports etc in order to stay healthy and become stronger To lose weight, exercise regularly and eat less. do some exercise/a lot of exercise etc this phrase is much more common than the verb exercise, and means the same thing Her doctor said that she needed to do more exercise.
    ldoceonline.com
    Exercise | Definition, Types, Principles, & Health Effe…

    exercise, the training of the body to improve its function and enhance its fitness.

    The terms exercise and physical activity are often used interchangeably, but this article will distinguish between them. Physical activity is an inclusive term that refers to any expenditure of energy brought about by bodily movement via the skeletal muscles; as such, it includes the complete spectrum of activity from very low resting levels to maximal exertion. Exercise is a component …

    exercise, the training of the body to improve its function and enhance its fitness.

    The terms exercise and physical activity are often used interchangeably, but this article will distinguish between them. Physical activity is an inclusive term that refers to any expenditure of energy brought about by bodily movement via the skeletal muscles; as such, it includes the complete spectrum of activity from very low resting levels to maximal exertion. Exercise is a component of physical activity. The distinguishing characteristic of exercise is that it is a structured activity specifically planned to develop and maintain physical fitness. Physical conditioning refers to the development of physical fitness through the adaptation of the body and its various systems to an exercise program.

    Britannica

    Hominids—human beings and their immediate ancestors—have existed on Earth for at least two million years. For more than 99 percent of that time, hominids lived a nomadic existence and survived by hunting and gathering food. It is obvious that this way of life was enormously different from the way people live today in developed countries. Thus, evol...

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    As civilization developed, nomadic hunting and gathering societies gave way to agricultural ones in which people grew their own food and domesticated animals. This development occurred relatively recently, approximately 10,000 years ago. Although many aspects of life changed during the agricultural period, it is likely that energy demands remained high, with much of the work still done by human power. Even in cities—which had evolved by about midway through the agricultural period—individuals expended more calories than do most people today.

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    The industrial period began during the mid-18th century, with the development of an efficient steam engine, and lasted to the end of World War II (1945). This relatively brief time span was characterized by a major shift in population from farms to cities, with attendant changes in many areas of lifestyle. Even though the internal-combustion engine...

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    The post-World War II period has been a technological age, a period characterized by rapid growth in energy-saving devices, both in the home and at the workplace. As an example, longshoremen in the late 1940s worked hard loading and unloading ships; by contrast, most longshoremen in the late 20th century had much lower energy demands from the job, because of the containerization of cargo and the mechanization of the loading and unloading process. Also during this period, the use of labour-saving devices in the home and in yard and garden work became much more widespread. Physical activity became less and less common in industrialized countries, especially among the urban population. Although the level of general physical activity has declined, most observers feel that there have been increases in exercise participation in many countries since the late 1960s. Jogging, racket sports, cycling, and other active recreational pursuits have become much more common. In a sense this is simply humankind’s returning to the more active lifestyle of its distant ancestors.

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