Why do all girl/female acts cry in the preview before their song?

[MusicXian]

I know they are more emotional than us blokes, but at Judges house nearly every female act cried before their audition (some blokes did too I know). I can understand to cry afterwards because you have released all your emotion in the song and it could come naturally, but I cant understand to cry beforehand as you would surely be too focused to let go of that emotion before the song.

[Marc]

:joker: they're all messes

[Mystic Mock]

I found the guys was even worse,especially Frankie punch face.