Why do Cheerleaders counts 5,6,7,8 and not 1,2,3

Question

Why do Cheerleaders counts 5,6,7,8 and not 1,2,3

In: 871

Answer 1

This goes back to dance. Most songs are in 8 beat groupings. So you time your moves to go with the beat. So the first Beat of the song is beat 1. You could 5, 6 ,7 ,8 because you don’t need a full 8 counts of lead in to get ready to dance so you only count the second group of beats so you start dancing at 1.