Rhabdomyolysis 横纹肌溶解症

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Anahad O'Connor, Exercise's Scary Side Effect; 'Rhabdo,' often associated with physically demanding jobs, is on the rise among exercisers. New York Times, July 18, 2017.
https://www.nytimes.com/2017/07/ ... ws-more-common.html

Quote:

"Three years ago, Christina D'Ambrosio went to her first spin class, pedaling fast on a stationary bike * * * Over the next two days, her legs throbbed with excruciating pain, her urine turned a dark shade of brown, and she felt nauseated. Eventually she went to a hospital, where she was told she had rhabdomyolysis, a rare but life-threatening condition often caused by extreme exercise. It occurs when overworked muscles begin to die and leak their contents [myoglobin is toxic to kidney, and probably liver also] into the bloodstream, straining the kidneys"

"An Army study in 2012 estimated that about 400 cases of the condition are diagnosed among active-duty soldiers each year.

another case of rhabdomyolysis: "a 24-year-old woman [was] hobbled by pain, her legs swollen and feeling 'as tight as drums.' She was rushed to surgery, where doctors sliced her thighs open to relieve a dangerous buildup of pressure.

"in general it occurs when people simply do not give their muscles time to adjust to an aggressive new exercise, experts say.

Note:
(a) rhabdomyolysis (n; 1950s: from Greek rhabdos rod + myo- + -lysis)
https://en.oxforddictionaries.com/definition/rhabdomyolysis

skeletal muscle  横纹肌
(b) indoor cycling
https://en.wikipedia.org/wiki/Indoor_cycling
("Indoor cycling, as an organized [ie, group] activity * * * in a classroom setting. It is commonly called spinning")