The half fish/ half man hero, Michael Phelps, isn't done cashing in on his good name yet. The 14-time Olympic gold medalist is changing up his dietary habits, something not hard to do when you consume 12,000 calories a day, by switching his mug from the cover of Frosted Flakes to Subway Sandwiches.

Maybe Phelps feels bad that he turned down an athlete-friendly Wheaties campaign to work on the frosted sugary cereal, and now wants to promote a "healthier" image. If true, Phelps is now locked: his contract means he can't do any other fast-food commercials, so those McDonalds' stints he did in Beijing are already a thing of the past.

The new campaign will highlight Subway as a destination for indulgent meals, such as a meatball sub, as well as healthy choices, such as grilled chicken on wheat. "Subway restaurants have always given me the options that I am looking for — whether that's healthy sandwiches before a big meet or the tasty meatball sub that I treat myself with," Michael Phelps said in the company's release. "I was ready to take my Subway fandom to the next level — I really think of Subway as a champion food option."

So let's see: from Frosted Flakes and Ronald McDonald when he was at the top of his game, to the replacement for Jared in Subway ads now that he's been out of the public spotlight for a couple months. Further proof that celebrity endorsement deals pay off at an inverse to how good the products are for you.