I'm a right sider. Mines like 30 % left 70% right.
It seems all my joints on the left side ache more than my right but all the muscle and weird tender points are all located on the right side. Which makes sleeping difficult, left side aches to lay on, but the right side i feel like im crushing when I lay on it. For some reason I can not fall asleep laying on my back, and well when I lay on my belly I always wake up with serious neck pain.
Im a right handed dominant though, so not sure the dominance theory holds up.
Today is not a bad day for me so far though =]
I have gotten good news today which has made my mood lighter and my body less angry.