Costco to offer hugely popular nutrition supplement
The green drink is poised to make even more green.

I’ll give credit where it’s due: The social media algorithm works quickly.
Click on an Instagram ad that seems remotely interesting, and soon you’re scrolling through a parade of ads for related products and services.
The chain reaction is rather mind-boggling. An ad for activewear begets workout apps, which beget fitness supplements, which beget celebrities and influencers hawking said apps and supplements.