Brisk, Half-Hour Walks Needed to Keep Off Weight

Adding a 15-minute walk to your daily routine probably won't burn off the calories needed to prevent obesity, Swiss researchers say. A study at Geneva University Hospitals suggests short walks do not burn off enough daily calories to compensate for the yearly weight gain seen in increasingly overweight populations. The researchers found adults between ages 35 and 74 who took a slow, 15-minute daily walk burned an average of just nine extra calories a day, while those who took a slow 30-minute walk burned about 25 more calories daily. Only brisk, 30-minute daily walks taken by all adults would be enough to bring the population's average calorie expenditure to the recommended level of 100 per day, the researchers concluded.

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