The World Health Organization (WHO) reports that physical inactivity is the fourth leading risk factor for global mortality, accounting for approximately 3.2 million deaths annually. Past evidence suggests that regular physical activity can lead to risk reductions of at least 20-30% for more than 25 chronic health conditions and premature mortality. However, the ideal amount and intensity of exercise to recommend to the general public is still a topic that’s hotly debated among the experts. Current physical activity guidelines recommend 150 minutes of moderate-to-vigorous intensity exercise per week, but a new review of the published literature indicates that just half this level of activity may still lead to noticeable health benefits. The authors of the review write, “There is compelling evidence that health benefits can be accrued at a lower volume and/or intensity of physical activity. These health benefits are seen in both healthy and clinical populations.”
Canadian Journal of Cardiology, April 2016