I just plugged some of my blog posts into this online test!
http://www.writersdiet.com/WT.php

The test found that my writing scores somewhere between "fit & trim" and "needs toning." My main writing flabbiness come from using passive voice! I just find using the active voice to be such an American thing... I struggle with making myself the Subject of so many sentences.

Is your writing flabby or fit?

ps I rewrote this post several times until my text was "fit & trim"!