https://www.cnet.com/news/penn-jillettes-magical-advice-for-keeping-healthy-at-ces-2019-just-give-up/

So, that's not necessarily what everyone thinks is the case at CES: In fact, of course you can be healthy, eat healthy food, get exercise, and not give up. But to me, that's besides the point. I struggle with consistency, and commitment, and I get discouraged after setbacks. At least the idea that bad health at CES could be overcome was kind of an encouraging thought. I tend to gain weight and then let it all go, and it takes a while to reset.

"I mean, I guess you can," he admits on staying healthy at CES. "I'm pretty hard-core vegan now, but even the vegan restaurants that are here are essentially vegan McDonalds. What I really do that makes it very easy is I do a whole-food, plant-based diet."