BEING a flight attendant requires patience, a love of travel, and a lot of life hacks.

Because these workers are traveling long distances in a small space all day every day, they need to learn what makes these flights seamless and comfortable.

A flight attendant named Cierra Mistt, who goes by @cierra_mistt on TikTok, has gained a following of over 3 million users thanks to her videos that offer travel tips and secrets.

She recently revealed three secrets about the job that most people don’t know – and one of them is pretty gross.

“Number one: we’re always wearing sunscreen when we work.

“We do this because we’re flying around in a metal tube around 35,000 feet every single day, and that’s really close to the ozone layer.”

Because they are so exposed to radiation, she said that health insurance considers them to be in the same category as astronauts and radiologists.

Her second secret included a tip that most of us will want to follow: don’t drink the coffee.

“Unless we’re super desperate, we will not drink the coffee or tea that’s supplied on the plane.

“The water that we use for the coffee and the tea come from the same spot, and guess what? It never gets cleaned.”

Although the airlines tell passengers that they do “regular water quality tests,” Cierra said this isn’t as frequent as you think.

“We are told that it is about 6-9 months for even one test on one plane to happen, and they’re not going to clean out that tank unless they find something.”

Her third and final secret was that she lives in a hotel along with nine other pilots and flight attendants.

She said the roommates have a lot of “juicy stories.”

Viewers were especially taken aback by her second reveal:

“Thanks for the water tip… definitely never drinking that damn water again,” one person commented.

“Good to know! Now I’m bringing at least 5 bottles of water,” added another.