i'm lauren hershey. i was here about 18 years ago. so hi, alice. i follow medicine a little more closely given my aging process. and i'm curious to learn over the last couple of years, mayo clinic book, cleveland clinic book, there is something called wellness medicine that is happening. i don't know how to define it. there's alopathic medicine. i never thought in those terms until a few years ago. that's health care delivery. so my curiosity is to ask each of you three panelists, how do you evaluate what's happening? how do you measure it? and how do you describe it? has this wellness movement been around for two years or six years or nine years? i don't want to connect it to some personalities on tv. i want to connect it to university of michigan where i've read about it or yale university. but the question is data. so if i move 10,000 steps a day, big deal. but it's supposed to make me healthier. how do you measure that? get my point? >> i think i understand what you're trying to say. i mean, we've -- that movement's been around for a long time.