[xiaoma]

Yes. As I said, the turning point for me seems to be at about 50km/week. I probably did double that in high school. That came out to about 10 hours of running per week.

I agree completely about "cube rats" not being able to lose much weight from 30 minutes 3 times a week. The research mentioned in the first part of the article seemed pretty much in line with my experience. It really does take about an hour to an hour and a half a day to make a big difference in terms of weight loss.

I still think that it makes sense for cube rats to do cardio, though. Even if it's only 30 minutes a day, they'll still be quite a bit healthier, lower their risk of heart disease more than losing weight would, and even promote neurogenesis.

The human body just isn't well adapted to being a cube rat.