Do babies get DOMS?

Sebastian is 9 1/2 months old, and just learned to crawl.   Which made me think, does he have sore muscles?  Sure, it did take him a while to build up to it a bit, but once he figured out that cross arm/leg motion, it was gangbusters.  Zero to sixty.  He's all over the place now.

I mean, I get sore if I bike to work after a few weeks off.  Do babies get sore muscles?  He's got to be aching, right? 

How does one tell, anyway?

These are the things I think about.  When I'm not thinking about how little I'm training.  Now that the kiddo has been out as long as he was in, it's time for me to get a little more serious.  So I did it.  I registered for the Philadelphia Marathon. 

I guess I better start training for it, huh?