Another form of exercise

I woke up this morning feeling like I swam a 5km butterfly time trial yesterday! Neck sore, shoulders sore, my arms and traps as well! And all of this from pulling one suitcase and a bag full of groceries around in Rome on our way to the train station, and then in Firenze. In my defense, the suitcase does probable weigh a good 20kg or more, and we did walk about 5km, half of it at speed and some of it on cobblestoned roads. If I'm this sore today, not sure if I'm looking forward to tomorrow!