Definitely not gestures by any definition I would use, but these body tricks are nice nevertheless.
Does your brain ever itch too?
I tend to categorize movement into gesture, fidgeting, practical actions, and moving around. Some things resist labeling however. Should more or less unvoluntary body language, like laughing or blushing, be considered as intended to communicate? If so, then a lot of animal body language should be included too. Is there another criterium at work?
And where do these body tricks go? The way it is presented points the way. The body is treated as an instrument. If you handle it correctly you can achieve a set goal. Ergo, they are practical actions. Any contenders?