Getting Old

On the 27th September 2006, I entered my 30th year. That means that on the same date this year, my age will begin with a "3". I don't know if its pshycological, but I'm starting to feel old.
Right now my left hip aches, my shoulder is stiff and I feel very, very grumpy.
Plus, I can't remember the last time I bent over to pick something up without grunting and groaning.
Please, please, please let it be pshycological. Otherwise I might as well go behind the barn and shoot myself in the face right now.
Then again, it could just be the "late shift" blues.