BOSTON , MA — A number of popular fitness plans claim that their quickie workouts will shape you up or slim you down. The programs themselves vary widely; some are based in fitness centers, such as Curves or The Blitz, while others are available only in books. But most studies show that to prevent disease and weight gain, you need much more exercise than any of these programs recommend, reports the September issue of the Harvard Health Letter, from Harvard Medical School.
Furthermore, some of these “no-sweat” workouts focus solely on strength training, skimping on aerobic activity and stretching to save time. Aerobic exercise, which raises your heart rate and improves cardiovascular health, has proven long-term payoffs. According to the Harvard Health Letter, a workout routine that doesn’t include aerobic exercise is sorely lacking.
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