The importance of movement to the body is expressed by the amount of brain space devoted to movement. (mindbodygreen.com)
I also feel more secure walking around with an 8 week old in hand, heels definitely need more brain space (which is what I'm lacking in at the moment!). (fifideluxe.com)
Without your posting helping me through the thinking, I would have wasted brain space etc. on the idea. (realclimate.org)