noun
morning protein; protein consumed at breakfast
Slang abbreviation of 朝ご飯たんぱく質, from a campaign promoting 20g of protein at breakfast. Used in health/fitness contexts.
朝たんをしっかりとって、一日を元気に過ごそう。
Let's get enough morning protein and spend the day energetically.
最近、朝たんにプロテインバーを食べている。
Lately, I've been eating a protein bar for my morning protein.