Bikes. Tuesday , September 12th , 2017 - 10:28:28 AM
Beat illness. Is cycling good for you? Yes! Forget apples, riding`s the way to keep the doctor at bay. “Moderate exercise makes immune cells more active, so they`re ready to ﬁght off infection,” says Cath Collins, chief dietician at St George`s Hospital in London. In fact, according to research from the University of North Carolina, people who cycle for 30 minutes, ﬁve days a week take about half as many sick days as couch potatoes.
History of the bicycle. Wooden draisine (around 1820), the first two-wheeler and as such the archetype of the bicycle. The "Dandy horse", also called Draisienne or Laufmaschine, was the first human means of transport to use only two wheels in tandem and was invented by the German Baron Karl von Drais. It is regarded as the modern bicycles forerunner; Drais introduced it to the public in Mannheim in summer 1817 and in Paris in 1818. Its rider sat astride a wooden frame supported by two in-line wheels and pushed the vehicle along with his or her feet while steering the front wheel.
Further innovations increased comfort and ushered in a second bicycle craze, the 1890s Golden Age of Bicycles. In 1888, Scotsman John Boyd Dunlop introduced the first practical pneumatic tire, which soon became universal. Soon after, the rear freewheel was developed, enabling the rider to coast. This refinement led to the 1890s invention of coaster brakes. Dérailleur gears and hand-operated Bowden cable-pull brakes were also developed during these years, but were only slowly adopted by casual riders.
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