Have We Been Thinking About Exercise Wrong for Half a Century?

"After a half-century asking us to exercise more, doctors and physiologists say we have been thinking about it wrong," writes Washington Post columnist Michael J. Coren.
"U.S. and World Health Organization guidelines no longer specify a minimum duration of moderate or vigorous aerobic activity."Movement-tracking studies show even tiny, regular bursts of effort — as short as 30 seconds — can capture many of the health benefits of the gym. Climbing two to three flights of stairs a few