Originally Posted by
Bacciagalupe
The current research is showing that you should aim for 150 minutes of low- or moderate-effort exercise, or 75 minutes of high-intensity exercise, or a combination thereof (e.g. 75 low, 40 high). When you go over that amount, exercise provides diminishing returns in terms of longevity and heart benefits. A typical example:
http://www.ncbi.nlm.nih.gov/pubmed/21846575
I don't think it shows that at all. That link and your previous link both show that that much exercise is good, but more is better.
"Every additional 15 min of daily exercise beyond the minimum amount of 15 min a day further reduced all-cause mortality by 4% (95% CI 2·5-7·0) and all-cancer mortality by 1% (0·3-4·5)."And your previous link showed that 420 minutes a week is better than 150.
The recommendation is a public health recommendation for a general population, and it's better to get a lot of people doing some exercise than it is to set the bar impossibly high, and have everyone throw their hands up.
It by no means suggests that more than 150 minutes a week is not beneficial.