Wet or nah?

Okay so, I haven't done any research in this yet. But I want to know. Do you think it's okay to braid your hair when it it's damp? Or should you wait until it's dry? My aunt has always told me that if I braid my hair when wet, it can cause breakage, receding hairline, scalp issues, etc. What do you think? Healthy or unhealthy?