I have started walking home from work as well as walking to my bus stop five days a week. I carry a backpack with my purse and work supplies daily. I have already been given the opinion I shouldn't count this as exercise for various reasons. I have a very active job, I am server in a sports bar on a slow shift I walk between 5,000 and 10,000 steps just at work that is not my day that is just my six to eight hour shift on my feet. but I am wondering if carrying the 14lb backpack makes a difference or not in my calorie burn. I walk just over half a mile to the bus stop and between half a mile home from the bus stop or one and two thirds of mile from work.