The tour, an exercise in voyeurism, grossed more than $131 million.
The authors found that "very hard exercise" was almost twice as effective as "moderate" exercise.
My lab at Tufts University summarized 36 years of published studies on exercise and weight, conducted between 1969 and 2005.
mid-14c., "condition of being in active operation; practice for the sake of training," from Old French exercice (13c.) "exercise, execution of power; physical or spiritual exercise," from Latin exercitium "training, exercise," from exercitare, frequentative of exercere "keep busy, drive on," literally "remove restraint," from ex- "off" (see ex-) + arcere "keep away, prevent, enclose," from PIE *ark- "to hold, contain, guard" (see arcane).
Original sense may have been driving farm animals to the field to plow. Meaning "physical activity" first recorded in English late 14c.; in reference to written schoolwork from early 17c. The ending was abstracted for formations such as dancercise (1967); jazzercise (1977); and boxercise (1985).
late 14c., "to employ, put into active use," from exercise (n.); originally "to make use of;" also in regard to mental and spiritual training; sense of "engage in physical activity" is from 1650s. Related: Exercised; exercises; exercising.
exercise ex·er·cise (ěk'sər-sīz')
Active bodily exertion performed to develop or maintain fitness.