There are many reasons people don't like ziplines. Fear of heights is a very good one. Fear of it snapping in half as you're gliding along is another. Or getting your fingers caught between the pulley and cable.
Now, though, as the video below shows, there's something else to worry about - something with lots of sharp teeth and an appetite for human flesh. That's right. Alligators leaping out of the water below trying to grab you.
To be fair, the clip was shot in 2014, but has only just surfaced now. And the course wasn't even open to the public - it was being tested out by a group of zipline instructors.
I think it's safe to say she will have absolutely shit herself.
"This video was taken as a group of zipline instructors were trying out a new zipline that passed directly over an alligator pond," the person who made the video wrote online. "Needless to say, this new zipline route has never been put in service."
While attacks obviously only occur in places where alligators are found, there has been a rising number of them lately, especially in southwest Florida.
In July, a 'gator nearly bit the arm off of a golf ball diver in a Charlotte County golf course lake. Days later, a 71-year-old woman had to be airlifted to hospital after being attacked by a 10-foot alligator at the Shadow Wood Preserve gated community in Fort Myers. A 10-year-old boy was also attacked while on holiday in Arcadia.
One of the biggest reasons behind the recent spate of attacks is the hot summer in Florida.
Alligators are more active when temperatures rise," a spokeswoman for the Florida Fish and Wildlife Conservation Commission explained in an email to Fox News.
"That fact, combined with this being a popular time of year for people to recreate near the water, creates the potential for human-alligator interactions."
Even if that weren't the case, building a zipline across an alligator pond is just asking for trouble. And lawsuits. Good thing they learned their lesson.