This weekend, video of a Manvel, Texas high school varsity cheer leader went viral, earning over 94,000 retweets all thanks to her "Invisible Box".
No one could pinpoint when this Invisible Box Challenge actually started, but according to the UK's Daily Mail, it goes a while back.
Earlier this year, Dontez Hines, a basketball player at Anderson University in IN, posted a clip of himself performing the now-viral stunt.
"The technique, if you want to make it look like [her video], is to bring the other leg higher than the other as if you are actually stepping over a box". Yes, I'm talking about all the people who are hopping over "invisible boxes"!More news: Man Utd, Basel, Roma, Juventus into Champions League last 16
The premise involves stepping onto an "invisible box" with one foot and leaping over it with the other foot.
See some of the attempts below and remember safety first.
"All [the] hip stabilisers on the right side are firing on overtime to hold that hip in position", he said.
If you thought walking on air wasn't humanly possible, the latest fad to sweep the internet will make you think otherwise.
The leg that is stepping on the box uses a great deal of hip flexor, glute and core stability. "I don't think it's hard to try but if you set it as a challenge you will probably want to train for a bit".
But the moving leg that hops forward faces a greater challenge.