Just to let it be noted...
Everyday I was walking I had been carrying this heavy bookbag with a change of clothes, my purse, my lunch bag, and water bottles in it. I had done so for the past month.
Today, since the school year is out I walked with a light bag that just had an extra bottle in it.... started jogging... and then managed to run a quarter mile xD
Apparently it was the heavy bag holding me back more than anything else!
Had so much energy and free time I walked for ELEVEN MILES