I noticed today that, for this week, the top search that led someone to my blog was “why should ballet dancers be an ectomorph?”
Grammatical awkwardness aside, I think that’s a good question, and one that I haven’t touched on in a while.
The short answer is:
“Because that’s the trend.”
My full answer to this question is really long, so here’s the TL;DR version up front:
They shouldn’t, necessarily — but because fashion and function influence each-other profoundly in the performing arts and especially in ballet, trends in the art form stemming from the mid-20th century have created a situation that makes it easier for ectomorphic dancers to succeed as professionals. Likewise, I would posit that choreography has evolved to best suit the ectomorphic bodies currently in vogue.
Since professional dancers broadly inform our cultural definition (“what a ballet dancer is“), we have come to think that ballet dancers should be ectomorphs — but really, there’s no overwhelming em>functional advantage.
Functionally speaking, some advantages exist — ectomorphs are usually light, and thus easier to lift when partnered — but disadvantages also exist — ectomorphs are more prone to osteoporosis; they’re less likely to be good at explosive movements like jumps. The mesomorphic and endomorphic body types also come with advantages and disadvantages in dance.
At the end of the day, it’s really a question of fashion.
…And now, on to the “Really Long, But Feel Free To Read It Anyway” version: