Why is my hamster doing this?

I’ve caught my robo hamster doing this periodically. Not constant, not every day, but I’m concerned because I’ve never owned a hamster and I’m worried she’s losing her mind or something? I referenced a chart for all her needs when putting her cage together. Any advice is appreciated! I’ve had her roughly 2 months and she’s my best little girl, I just want to make sure she is okay and isn’t distressed.