January's got me thinking detox.  I'm not alone; sales in products related to cleanses and wellness skyrocket this time of year while advertisements for smoothie and juicing systems abound.  We don't care that it's 15 degrees outside and our cars are frosted over.  We've resolved to drink light, frosty beverages and we are DOING THIS THING.  

Great.  But what exactly is it and why are we doing it again?