1 hour of HIIT exercise a week is as effective as 5 hours of moderate activity, research shows

“Low-volume” high-intensity interval training (HIIT) of less than 20 minutes, three times a week, is as effective as the World Health Organization’s recommended 300 minutes of moderate activity a week, concludes a recent report in the Journal of Physiology. A review of a decade’s worth of HIIT studies has also found that as little as four minutes of HIIT three times a week can improve health. HIIT has become increasingly popular as a quick and effective way to improve health, with scores of programmes and classes popping up in Hong Kong in recent years. The training incorporates short bursts of…