John Cena has partnered with Met-Rx for a new campaign titled “Level Up,” centered around performance nutrition and muscle recovery.

The campaign highlights Met-Rx’s Big 100 bar—featuring over 30g of protein—and uses a video game-inspired concept where Cena “levels up” after fueling with the product. The campaign will run across social platforms and connected TV.

This isn’t just another celebrity endorsement. Cena has long been associated with training and supplementation, and Met-Rx is positioning this partnership as a continuation of credibility, not a one-off marketing stunt.

At a time when influencer fatigue is real, brands are shifting toward trusted, legacy figures to reinforce authenticity.

The supplement space is moving toward story-driven campaigns over transactional influencer deals. Expect more brands to invest in long-term partnerships that feel rooted in actual usage—not just paid promotion.

Sources: PR Newswire, MediaPost