The Best Workout for Weight Loss

TIME

Everyone knows that cardio exercise—by way of a bike ride or a sprint—is key to weight loss. But a high-intensity cardio workout may do a better job of decreasing blood sugar levels than lower intensity exercise, according to a new study in Annals of Internal Medicine.

The study assigned 300 obese people to a group: one that exercised with low intensity for long periods of time or another that engaged in high-intensity workouts for short durations. By the end of six months, people in both groups experienced similar levels of weight loss. But those who had exercised with higher intensities saw reduced two-hour glucose levels, a key measure for predicting conditions like heart disease and stroke. People in the high-intensity group saw a 9% improvement in glucose tolerance, compared to a negligible change in people who took part in low-intensity exercise.

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Increasing the intensity of a workout isn’t…

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