Sure, do your thirty minutes of exercise several days a week. It’s a good plan. Unless, that is, if you actually care about your health. At least that’s the finding of a new study of studies which found, for heart health, thirty minutes of exercise a day is not nearly enough. You should double or quadruple that. (Apparently, tripling is a no-no.) Seriously, at this point I think the best way to burn calories is to try to keep up with the onslaught of studies about personal health.

+ Americans spend about 10% of their time outdoors. (We’re what you’d call Indoorsy.) The Mayo Clinic is launching a major study to figure out how all that time indoors is affecting us.

+ Both of these stories provide a nice lead-in to Alexis Madrigal’s look at the deception that lurks in our data-driven world.