In cheerleading, pyramids are multiple groups of stunts connected aerially by the flyers. This connection may be made by simple linking of hands or having a multi-level pyramid. The flyers already in the air act as primary bases for another flyer or flyers on top of them.

Safety

* the japan times SEP 25, 2014
* (?PDF) Journal of Nippon Medical School. Accepted, September 27, 2015
*(?PDF) Yutaka Nishiyama January-15 2017 NAID:120005972587