-A. Sleep is a subject we should all know a lot about, we spend one third of our lives sleeping. Even though everyone sleeps, scientists have only recently begun to understand what goes on when we sleep. They used to believe that the body repairs itself while asleep, there is some truth to this but the body also does this while awake. The brain does not simply shut itself off at night, it goes through a complicated series of chemical changes. Scientists have begun to chart these changes, working complex instruments that measure brain-wave patterns. They have found that we do not move smoothly from being awake to being asleep, we pass through a cycle of four sleep stages. At each stage blood pressure and pulse rate drop, the body temperature also goes down. In the second stage the number and length of brain waves go up, while the sleeper's eyes begin to move rapidly back and forth behind their lids. Scientists call this activity rapid eye movements, or REMs, the activity that accompanies most of our dreaming. If a person is deprived of REM sleep, that person will soon become bad-tempered and irritable. A full night's sleep is not a single, unbroken state but consists of four or five of these multi-stage sleep cycles.
B. In 1867, a chef at a hotel in Saratoga Springs accidentally dropped some thinly sliced potatoes into hot cooking oil, instantly the world found a new delicacy: the potato chip. At the time, Saratoga Springs was America's most fashionable resort, fads that started there usually found immediate success. Almost overnight, the potato chip became Saratoga's hottest item. The wide, tree-lined avenues were filled with people eating potato chips, the huge veranda of the United States Hotel was no different; it was filled with chip-eaters too. Some of the richest, most powerful people in the world consumed them regularly, for instance, the Vanderbilts could often be seen daintily plucking chips from paper cups on their stroll back to their mansion. The elegant "Saratoga chips" remained the delicacy of the wealthy until 1925, when the first chip factory was constructed in Albany, New York. The potato chip was no longer the snack of only the rich and famous, it became a common household item. Of course potato chips have changed a great deal in the last hundred years, now they come in various textures and flavors, some even come stacked in paper tubes. Still, the next time you grab a handful of greasy, flavor-dusted chips, you might pause to remember the noble origins of that humble food. It might be the closest you'll ever get to living like the Vanderbilt, you'd better enjoy it.-
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