The New York Times reports on research showing that several shorter periods of exercise may as beneficial -- or even moreso -- than one longer workout:
As it turned out, exercise was helpful in controlling blood pressure, but breaking up the workout into three short sessions was significantly more effective than the single half-hour session. “The fractionized exercise led to lower average 24-hour blood pressure readings,” Dr. Gaesser says. ...
His work joins a small but compelling body of science suggesting that, for many purposes, short, cumulative exercise sessions are remarkably beneficial. A study published last year in PLoS One, for instance, found that in children and teenagers, repeated bouts of running or other physical activity lasting as little as five minutes at a time reduced the youngsters’ risks of poor cholesterol profiles, wide waistlines and above-average blood pressure readings as much as longer exercise sessions did.
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