The irony is that this story was posted on Google+.

How is that ironic?

I assume he is saying Google knows just as much about you as Facebook.

I think the irony is that this prove Google doesn't know social but Facebook does.

I think the irony is that the dude is using Google+, yet he is as technically advanced as any average Facebook user.

Amateur marathoner here. Those lying side leg raises with toes pointed down are THE BOMB! Here's a great vid by Strength Running that illustrates that exercise and several more: http://strengthrunning.com/2011/02/the-itb-rehab-routine-vid...

Random slow person here: I had knee pain from running and cycling: physical therapy involved doing the exercises shown in the video, so +1 anecdata.

Cannot upvote these leg raises enough. Especially useful for any back pain associated with sitting too long.