Soreness that feels good

Today is an off day.  I started the day off with a slow 30 minute jog.  I didn't even realize my legs were sore until I began my run.  I think I am feeling the box jumps from 2 days ago now.  As I was running I was actually thinking to myself that this soreness that I have actually feels good!  The strength training that I am now doing I believe is helping my running.  My legs feel really strong when I have run recently. Back to CF tomorrow for some more punishment to this out of shape body.  I CAN'T WAIT!