I can't speak for anybody else..
My personal experience is that goofing around with energy work has caused some cramps and tremors.
That phase passed, now I can circulate freely without getting the shivers.
It follows attention and is disturbed by emotion. I've gone through some pretty significant stress the last year or so and there have been three times where things have been so intense it has resulted in physical illness. 12 hours of vomiting. Can't even keep wat down.
I've since managed to learn to manage it when it's small. It tends to build when I'm neglecting my practice and in a sense is like letting my lawn grow wild. If I'm attentive I can tend to the weeds before the snakes move in.
Working with others, likewise, you start to draw a lot of water so to speak and need to be mindful of how much wake you're creating.
Essentially, good information, legitimate initiation, sincerity and consistency with a focus on making oneself fit to be of service is the path. Details reveal themselves like medicine in the forest if you keep your eyes open.