 There's one called BNP that tells us how hard your heart is having to pump in order to circulate blood. So what I'm trying to get out here is that there's so many answers that are out there that all you have to do is test properly and you'll get all your answers. So low dose aspirin, if you're over 60, it's not recommended unless you talk about it with any of your doctors prior. All right, the third thing that you probably don't know