I thought I was doing pretty good. I've been running every day, at least a mile, for 1339 days. Most days I go between 1.5-2mi, trying for around 15-20 minutes of good exercise. That gets me a little over 2-2.5hours of hard exercise a week.
Apparently that's not enough. According to a recent report, most people do 2 hours a week, but they need 4. That says 75 minutes of hard exercise (which I do) and about 3 hours of lighter stuff. I think I mostly get there, with baseball, with helping Tia sometimes, with karate, volleyball, skiing, but not always.
Makes me want to re-evaluate my life a bit and spend a bit more time running, and make sure I do a bit more other stuff.