Ever wonder what those mini-trampolines are used for at the gym?

More videos Ever wonder what those mini-trampolines are used for at the gym?

At the gym
Can’t contain those at the gym
For those that wanted the video i used for the gif
at the gym
Bouncing at the gym
at the gym
Pharah at the gym,
Fucked At The Gym
Ana at the gym
At The Gym
Wonder what the # for? 🤔
Are these safe for the gym?
At the gym
At the gym