I meant that I have lots of experience singing Bon Jovi songs on karaoke, and I really have noticed that once I start moving around while singing, my voice immediately comes out easier and my range kinda "opens up" a bit more. Like Jon, I used to have the nasty habit of staying rooted to one spot and gripping the mic stand to make it easier for me to hit the notes (as I've been struggling like hell with my range because of puberty), but nowadays it really seems like it's easier when I'm not doing so.

I'm no vocal expert (as you seem to be), but this is how I feel it.