Being in control of their sense of balance is important for any trainee since they’re expected to hold still and steady in even the most difficult poses. This trainee right here found herself on a balance trainer. She’s tied above a vibrating machine with ropes that have a little slack. Due to the way she’s suspended over the balance trainer, it’s near impossible for her to get back up should she ever slip. Her feet are positioned on two slopes on the sides of the machine, making it difficult for her to not lose her balance and cause the toys to speed up to their maximum intensity for the remainder of the session. Her trial gets progressively more difficult, as her muscles tire out from the squatting pose and her mind becomes weak from being pleasured. Some especially cruel trainers use lubricants below the trainee’s feet, causing them to constantly be having to readjust their legs to prevent falling~