FBB Backstage Pump Room "Prison Towel Workout"

Hey there everyone! So much like the title expresses I'm looking for any images and/or clips of FBBs backstage in the pump room doing the "prison towel workout". For context as best I can explain it, it's basically when two FBBs get together both holding a towel. One acts as the weight/resistance pulling it down and the other gal proceeds to lift it in reps against them.

Hopefully some users here can help me out in finding any said images or clips of this as I need the references. Thank you in advance!

The best I could find is a picture of Cornelia Brandt and some videos of Song Naeun pumping up backstage.

Cornelia:

Song: