In The End Of "Mummy In A Maze" Brennan Starts Spinning In The Lab ,And Booth Turns Around And Askes Her What is She Doing And She Says Nothing And After That She Does Something With Her Hands.. so my question is :D What was she doing?

My guess is she's pretending to stop bullets with the wristbands she's wearing because earlier in the episode she mentions ''They're not actually titanium, they can't stop a bullet.''

Superman and Wonder Woman can change into their secret identity or their superhero mode by spinning around.

And later she is indeed acting like she's stopping bullets with those wristbands, it was really cute..

I know this reaction is late, but I am answering question I know, xD..