I'm also turning 29 years old on March 8th 2017.
I don't think that's really old but at times I do feel older with my back problems and knee problems.
When I was 7 I was in a minor wreck while in van with mom,dad, aunt and cousin.
A guy backed out of a school parking lot and my dad swerved to keep from getting hit but we were hit anyway and my knee went into the back of a seat that was in front of me.
22 years later my knee hasn't been the same and seems to get worse as I age.