"There's a point when you're hair won't grow any longer, no matter how much you want it to!"

What is your hair regimen? How often do u do it?

It's true, it's called terminal length, the maximum length your hair will grow under ideal conditions. When a hair reaches that length, it would fall out and the follicle would become dormant until the next growth cycle began.

But I think that length is probably longer than waist length in most cases. If you abuse your hair, you would never really be able to reach that length, because the individual strands would break off long before they ever got that long.