http://well.blogs.nytimes.com/2010/08/18/phys-ed-the-right-kind-of-sports-bra
But a raft of new studies has established, convincingly, that breasts are more mobile and less manageable than most people once believed.
There are times when modern science makes me want to smack it upside the head. Or, in this case, aggressively moosh its face into my cleavage.