Mouth Wide Open

Have you ever noticed how when you open your mouth your sense of smell is often heightened?
For example, when eating or drinking, you smell more at times when your mouth is open.

If you combine this idea that the sense of smell is responsible for many of the triggers for memories. Then, what you get is that, there are more memories, or stronger ones when your mouth is open.

So you may remember you breathing, your speaking, as well as eating and drinking more, as your mouth is open during these activities. Or so the hypothesis goes...

now that i think about it... you have a point