I'll tell you how the Instagram people are eating off of Herbalife and Advocare...
They dedicate themselves to the gym and get in great shape physically and aesthetically. They may or may not be actually taking the products, who knows, but we do know that they work their ass of for their body. Then they market the Herbalife or Advocare products on their Instagram. They amass thousands and thousands of followers who think they with the right amount of dedication and the Herbalife product, they'll achieve the bodies they desire, too. The followers of these people then request Herbalife products, and money is made that way. I'll give y'all an example:
http://instagram.com/theprolover
^^^This guy has over 213k followers. A good amount of which are also his customers. It's a great hustle truthfully if you can get a body that the masses desire. At that point, the customers pretty much come to you...and in droves, especially with how focused people are nowadays about fitness, beach bodies, etc.