Secretary of Health Robert F. Kennedy Jr. has addressed why he wears jeans to exercise after videos of him working out in the unorthodox athletic attire raised eyebrows.

Kennedy revealed that the unusual sartorial choice is just a matter of habit during an interview on Fox News’ “Jesse Watters Primetime” Tuesday.

“Well, I just started doing that a long time ago because I would go hiking in the morning and then I’d go straight to the gym, and I found it was convenient, and now I’m used to it, so I just do it,” he told Watters when asked about his outfit.

“Okay, there were a lot of theories, but that makes perfect sense,” the host responded.

Kennedy, a known outdoor enthusiast, raised eyebrows last month after he posed for a photo with his son in the sweltering Arizona desert wearing a sweat-drenched tee and blue jeans at the top of Camelback Mountain outside of Phoenix.

The 71-year-old’s odd workout clothing choice caught the internet’s attention again this week after Kennedy posted a video with Defense Secretary Pete Hegseth promoting a pull-up and pushup competition, dubbed the “Pete and Bobby challenge.”

In the clip, Kennedy can be seen exercising in his typical blue jeans, held up by a belt, and a t-shirt while Hegseth dons gym shorts.

However, the health secretary’s reason for working out in jeans has only sparked more confusion and debate.

“Isn’t it a bit unhygienic to wear jeans, especially those you’ve worn while hiking, in a gym?” X user Anthony the Mesa questioned.

“The next question… why would you wear jeans to hiking?” another asked.

“Hiking in jeans is diabolical,” a third jabbed.

Meanwhile, others claimed jeans are the ideal choice for hiking in nature.

“Bunch of city boy b—–s never been near cactus let alone spiders or a rattlesnake,” a denim supporter chimed in on X.

Another supporter insisted that jeans are “most appropriate” attire for hiking outdoors.

“Wearing jeans when hiking or doing anything else is not at all odd in Colorado,” wrote a third person.

Kennedy, a former Democrat, was sworn in as the 26th HHS Secretary on Feb.13, 2025 after being nominated by President Trump.

He immediately established the “Make America Healthy Again” commission focused on fitness, food reform, and chronic illness prevention.

The commission has helped re-establish the Presidential Fitness Test for public schoolchildren, ordered the FDA to phase out eight petroleum-based food dyes by 2026, and released a report identifying potential causes of childhood chronic disease.