Just Wondering

Do you ever wake up and feel like you've been beaten all night with a whiffle ball bat? This morning, I just feel sort of sore all over my body, but for no apparent reason. And it's not the intense sort of sore you get after a good workout or vigorously scrubbing the blood out of a light-colored carpet, it's just a dull ache. As far as I can tell, yesterday's rigorous schedule of A.) watching television, and B.) sitting down had no potential to do me harm, so it must be something else. My first guess would be my kickboxing classes, but I feel like I've gone past the "painful soreness" stage into the "gasping for breath but doing all right" stage. My only other attempt at understanding this is that I am getting sick, but I have absolutely no other symptoms. Unless this is some sort of new sickness that only brings about achiness, in which case, I won't really miss dripping snot or raging fever dreams, but I don't really buy that either. Can anyone explain my rampant minor aches and pains? I'll bake you cookies. And I guarantee you that magic (be it dark or otherwise) is NOT the cause this time, so we can just rule that one out early in the game.