As you’ll read in today’s newsletter, BodyArmor’s newest product is not a liquid. It’s a powder, packaged in a single-serve stick. The sports drink brand is the latest to add the format, which is catching on with consumers looking for convenient and highly portable functionality.

Analysts at Consumer Edge Research wrote in March that single-serve, non-ready-to-drink beverages — while small relative to the entire US non-alcoholic beverage market — were growing...