Depends on the accident. If I was injured I wouldn't want to be dancing. Some times people can go through gnarly wrecks pretty well unscathed though.
Once a car driving head on in my lane caused me to run off the road at 50 MPH. My car went down an embankment, scraping several trees which broke off the side view mirrors and shattered the windows. It stopped, resting against a huge tree, mired in mud.
We walked away. Not just that, after the car was yanked out the lights still worked, it pulled to the right, but the officer said we could drive it home if we wanted so we did. Aside from making me scared to drive on windy tree lined roads at night, I suffered zero injuries. Not a single bruise or any soreness. My passenger got a tiny cut on his butt from sitting back down on a crumb of glass after the accident. That was it. It looked so bad the officer told us he thought he was going to have to deal with a fatality when he saw it. We were on our way to a party at the time, and just went to the party about 3 hours late (I even danced!)
What saved us in that accident was that the mud basically swallowed the car and cushioned it to a stop. If the trees had been taking the impact....
Another time I was rear ended on the freeway. We stopped and exchanged info, I felt jittery but otherwise fine and kept driving home. Her car was so screwed up she couldn't drive it (All hail vintage mercedes!)
About 20 minutes later I felt the most excruciating pain in my head and neck. It felt like my head was about to fall off and I couldn't look right or left. Turns out I fractured the atlas and axis vertebrae in my neck. I walked around like that for two weeks until x-rays finally came out clear enough to show that they were broken and I am very lucky to not be paralyzed or dead. It still gives me major problems years later.