Good and Bad, the Little Things Add Up in Fitness - NYTimes.com: " . . . Specifically, an encouraging 2012 study of 52,656 American adults found that those who ran 1 to 20 miles per week at an average pace of about 10 or 11 minutes per mile — my leisurely jogging speed, in fact — lived longer, on average, than sedentary adults. They also lived longer than the group (admittedly small) who ran more than 20 miles per week. “These data certainly support the idea that more running is not needed to produce extra health and mortality benefits,” Dr. Carl J. Lavie, a cardiologist in New Orleans and co-author of the study told me. “If anything,” he said, “it appears that less running is associated with the best protection from mortality risk.” Similarly, in a study from Denmark that I wrote about in September, a group of pudgy young men lost more weight after 13 weeks of exercising moderately for about 30 minutes several times a week than a separate group who worked out twice as much. The men who exercised the most, the study authors discovered, also subsequently ate more than the moderate exercisers. Even more striking, however, the vigorous exercisers subsequently sat around more each day than did the men who had exercised less, motion sensors worn by all of the volunteers showed. “They were fatigued,” said Mads Rosenkilde, a Ph.D. candidate at the University of Copenhagen and the study’s co-author. Meanwhile, the men who had worked out for only about 30 minutes seemed to be energized by their new routines. They stood up, walked, stretched and even bounced in place more than they once had. “It looks like they were taking the stairs now, not the elevators, and just moving around more,” Mr. Rosenkilde said. “It was little things, but they add up.”. . . "
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