The conversation between human and AI assistant.
If nails and hair are basically dead cells, how come they grow?
That's really interesting. So, how does the body decide how long hair or nails will grow before they fall out or get trimmed?
It actually has to do with the different stages of growth that hair and nails go through. Hair, for example, goes through three stages: the anagen stage, where it grows actively; the catagen stage, where it stops growing and the follicle shrinks; and the telogen stage, where the hair falls out and the follicle starts growing again. The length of each of these stages varies based on a variety of factors, including genetics and overall health.