Here's what it looks like in action: https://www.youtube.com/watch?v=MHWw9UKzHAo

Surprisingly similar to games like Swiss Wrestling: https://www.youtube.com/watch?v=XRJQpXMAm3E

And Korean Ssireum:https://www.youtube.com/watch?v=V5eyvFYjxgA

And Mongolian Wrestling: https://www.youtube.com/watch?v=Ry-OuWGhjVg

And to a point even Sumo: https://www.youtube.com/watch?v=dyA4kW-Y5rE

And Igbo: https://www.youtube.com/watch?v=HYkarWIhTDg

Turns out it just seems to be a pretty human kind of thing to do.