You think you have a strong core? My daughter Catherine watches TV like this for an hour at a time - suspended in between her elbows and chest on the couch (on the left) and her knees on the trunk coffee table (on the right). Somehow I think if I could do that, I wouldn't have any trouble at all with aerobars.
Elisabeth in the background is, as always, in charge of the DVD cases. She's obsessed with them. She turns them over and over and opens and closes them and "reads" them. Catherine steals them away from her when she wants to make Elisabeth cry.