While it's true that you don't need a degree to dance, there ARE doctorates in dance if you want to pursue one; a couple of schools in the US that offer the degree are Temple and Ohio State Universities. I've linked the names of the schools to their pages on the program so you can read about exactly what is involved.
study
To obtain a doctorate in dance, you typically need a master's degree in dance or a related field, submit a research proposal, complete coursework, pass comprehensive exams, and write and defend a dissertation. Additionally, you may need to demonstrate proficiency in dance performance and teaching.
You typically need an AuD, or a doctorate in audiology.
A doctorate is a good start
What age is needed to dance gumboots
For some doctorate degrees, like the MD degree, an internship is needed after graduation for the degree to actually become valid.
you need to know how to dance
swaki
a choreographer needs a dance degree for a particular type of dance
Within the US today, a pharmacist must have a doctorate degree (Pharm.D)
doctorate degree
Stamina is very important in dance as dance is a highly fatigues activity and stamina is needed to prolong your capability. So basically you need stamina to last longer during tiring activities.