We can wake ourselves up by increasing our oxygen level by breathing deeply. Or conversely, we can put ourselves to sleep with a kind of meditation of shallow breathing, and repeating silently the words to the rhythmic "in" and "out" like a mantra.
I shop for a living. But lately, I haven't been shopping like I used to. Am I losing my retail mojo? No, it's just that it's hard (even for me) to justify new shoes when the economy is crumbling around me.