5 hours per week of 3 METs (a 2.5mph walk is 3 METs) reduces your risk of Cardiac disease by 70%. This is from one of the bigger meta analyses I’ve ever read. T

5 hours per week of 3 METs (a 2.5mph walk is 3 METs) reduces your risk of Cardiac disease by 70%. This is from one of the bigger meta analyses I’ve ever read. The US’s exercise guidelines are based on it. In general more is better, but it’s diminishing returns, and you could argue that more time than this could be better spent doing other healthy tasks.