My muscles rarely every get sore/burn the next day after workouts. I can sort of feel a little tension in a few of my muscles the next day, but not always and not very much. I know soreness is not the sign of a good work out, im just wondering if this is normal? I am pushing myself very hard. Im 19, maybe thats why im recovering so quickly? Would you guys recommend I add in a few excercices to each of my routines?