Welcome Aboard Jlo888..
If you are going to use the cam as an action cam and Dance, wearing it, in any way it will be seen on you..
You will want to set the scene where, you can angle the camera, out of the picture. so you can see yourself or others dancing. This is where wifi, Iphone/droid and a tripod comes into play. With a swivel screen camera, or any camera with a lcd view, you can see that on the spot.
You will want a tripod, as one accessory, while with older gopro's you would get a head strap mount, in a kit.
You have options to mount the cam, angled over you on a ceiling fan, light etc. Tripod set up in front, to the side ....
Personally if it was on me and I was jumping and dancing. It be just that, key to excellent video is planning and slow pans.
Just wanted to add to the note...
Again Welcome aboard