Recently I saw a small baby shrieking extremely loudly (my ears hurt) for at least 4 minutes .
How is it possible? If I yelled so loudly, I would be defeated by throat ache after less than a minute. I know that heavy metal vocalists are capable of such feats, but it takes them a lot of practice.
So how can children yell so loudly for so long? Do they ignore pain? Does the pain cause the feedback loop of discomfort->yelling->more discomfort->more yelling? Or do they have vocal chords of titanium?
I tried google search, but answers are generally "why do children scream", not "how can they scream".