Facial exercises - do they really work?

Whether you call it facial yoga or just exercises for the muscles in your face, does puffing your cheeks and sticking out your tongue every day work to tighten things up, or do they simply make you feel silly?

This is what some doctors have to say about facial exercises to reduce sagging.

And here's a thread in the skin tightening forum in which quite the debate rages about facial exercises. Who knew face yoga could be so controversial?