It's no secret that celebrities make tons of money from endorsements, and social media has opened up even more ways to hawk products at adoring fans. An Instagram post from Kylie Jenner, for example, is estimated to be worth more than $200,000. Remember that the next time she pops up in your feed saying how much she loves FitTea. (Spoiler: It's basically a glorified laxative.)

It's not just A-list celebs. Fitness professionals also make money promoting weight-loss products to their followers. That doesn't mean they don't believe in the product they're posting, but would they snap a photo if they weren't being paid to do so? It's an impossible question to answer, but it inspired us to look closely at some of our favorite health and fitness Instagram accounts and point out some of their seemingly sponsored posts:

Even though this post comes from a trainer, spiked seltzer isn't much healthier than beer or wine.

This looks like a standard grocery haul, but the description mentions Target three times and throws some low-key shade at Whole Foods.

There's no #ad here, but it's the quintessential framing for a sponsored post.

This is a diet in a delicious disguise.

Count the buzzwords.

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