An healthy state of hair growth to me is a growth that I am comfortable with. My healthy state of hair growth is different from the next natural's healthy state of hair growth. For me, this will the the growth level where maintenance of my hair will be managable. I know that if I am able to grow my hair down to my bum, I will have a hard time managing it. That is just me.
Different factors can affect hair growth, to learn more about Hair Growth and Maintenance, view the video below: