What is the activity? The idea is to get across a space like a parke without touching the ground.?

I heard of this thing that people are doing where they are doing strange things to get across a park for instance WITHOUT touching the ground with a foot. What is this called. I've seen at least ONE video of it but don't know how to describe it in other way. I THINK it was described as an new extreme sport.|||I've not heard of this one. Are you sure this is an astronomy question?