Hardcore Ketogenic Diet Trim later, the Greek physician Galen described strength training using an early type of dumbbell. But the history of exercise equipment doesn't really begin until the late 19th century with the appearance of the barbell. Early barbells were made with hollow globes filled with water or sand. About the same time, modern gymnastic training equipment came into being in Germany with Friedrich Jahn's equipment that included wooden horses, balance beams and parallel bars.
Serious exercise equipment started appearing in the late 18th and 19th centuries. The first stationary bicycle was produced in the 18th century and was a large machine that worked both the arms and the legs. The first rowing machine appeared in the mid 19th century, and looked like the midsection of a boat.
Later in the early 20th century came machines to improve physical fitness. Many of the machines were adapted from earlier applications. The treadmill, for example, was initially invented with industrial Hardcore Ketogenic Diet Trim applications in mind, during a time when steam engines were not practical and before electric motors were in widespread use. Later it and other weight and pulley systems were adapted for use in gymnasiums as exercise equipment and as features to improve safety for strength training. By 1933 the treadmill was in widespread use and in 1952 was being used in medical applications.
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