Whether she is fucking around for fun or not, swing burpees are a "thing". There is a big fitness movement going on right now to essentially do increasingly bizarre workout routines. Crossfit sort of started it. Crossfit was very down to earth. It used standard and modified Olympic weight lifting exercises to build a more of a general fitness routine geared towards military service members. Somewhere along the lines, people figured out that making crazier modified routines resulted in more attention, and made it easier to sell memberships for insane amounts of money...and modern crossfit was born. This is where the hur-dur crossfit comes from.

This video is a splinter from this phenomenon. I can't tell the exact group, but I suspect it is beachbody based. Beachbody uses the same model of crazy, unnecessarily complicated exercises that make them stand out to attract people to purchase their nutrition shakes. It's essentially a pyramid scheme. You buy into the program to become a "coach" and sell the shakes. To do this, you film yourself doing this wacky workouts and spam them on social media to your followers. The whole point is to draw attention to yourself.

If you look at the source for this video, you can see that's exactly what is going on.

I'm not saying she deserves anyone throwing shade her way for doing something she wants to do and posting it online....I just wanted to give some perspective. However, the premise as a whole is pretty stupid and is a borderline scam.