A human pyramid is an acrobatic formation of three or more people in which two or more people support a tier of higher people, who in turn may support other, higher tiers of people. People above the bottom tier may kneel or stand on the shoulders, backs or thighs of the people below them. Typically, the number of people in each tier is one greater than the tier immediately above it, resulting in a triangular structure reminiscent of the formation's namesake.

Cheerleading is an activity in which the participants cheer for their team as a form of encouragement. It can range from chanting slogans to intense physical activity. It can be performed to motivate sports teams, to entertain the audience, or for competition. Cheerleading routines typically range anywhere from one to three minutes, and contain components of tumbling, dance, jumps, cheers, and stunting. Cheerleading originated in the United States, where it has become a tradition. It is less prevalent in the rest of the world, except via its association with American sports or organized cheerleading contests.