Group of Girls Fall on Each Other While Trying to do Exercise on Giant Hamster Wheel

This group of girls were doing exercise on a giant human-sized hamster wheel. The three of them stood next to each other holding the wheel while a man started spinning it slowly. As the wheel made one spin, one of them lost her balance and fell. Then they decided to switch their positions and try again. This time, one of them lost her grip and ended up falling on the second girl and further both fell on the third one.