After I had orthopedic surgery on my right knee I trip on air once in a while...
Sorry to hear about that :/ and at least you have an excuse for tripping on air then

*doesn't have an excuse e.o*
I am very accident prone.
In fact, I am so accident prone, I have started doing it on purpose to cover up just exactly how much of a clumsy fool I really am by making people thing I'm even more dysfunctional.
However, I have noticed that I am more prone to injuring the right side of my body than the left.
If I am to fall and scrape my knee, it will be my right knee.
If I'm walking barefoot around the house & stub my toe, it'll be one of my right toes.
If I am to bang my shin on some piece of furniture when walking around the house in the dark, it's going to be my right shin.
If I'm picking my nose and someone bangs my elbow ramming my finger so far up my nose and into my brain, it will be my right elbow, my right finger, my right nostril and the right-side of my brain.
But wait... what if you were picking your left nostril? I can understand your right elbow and right finger but not the right nostril and the right-side of your brain if your picking your left nostril... oh well :/ For me my left side mostly get injured, I think my right side just wants to laugh at my left side because I use my right side more often...