There is something to be said about the sore muscles you acquire from a good Martial Arts workout.
As I hobble around the house today I am reminded of the wonderful and challenging workout the night before. Some of my favorite black belts were there as well. Several black belts training together always intensifies training even if is only bag training. Not an ego thing but encouraging each other to push themselves even harder. Their belief in your ability, giving you strength and endurance to punch and kick a little faster.
Yes indeed, there something to be said about a good Martial Arts workout.
I recommend it all. No matter your age or level of experience.