I think I know why! This happens to me as well, I think it's because when you yawn you leave your eyes open longer than you would normally before you blink. So close your eyes when you yawn and problem solved
1 year ago
Last edited at 6:05PM on 2/19/2013
At the corner of our eye is a tube leading to the nose, at the top of which is a small container called a lachrymal sac. This sac is full of tears. When we yawn the muscles in our face squeeze this sac and tears spill out from the eyes. It's so annoying!