Harnessing the power of high-intensity interval training
Interval training means adding brief bouts of strenuous exercise to a workout. Compared with moderate-intensity exercise, it not only saves time but may also help people lose weight and improve their heart health. Also known as high-intensity interval training, or HIIT, the practice may help people burn calories at a high rate after they stop exercising. It also seems to be especially effective in improving the body’s ability to use oxygen, known as cardiorespiratory fitness.
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