...when calculating calories burned? For example, if I carry books in a backpack while walking, how does that affect the calories burned?
I know the calories burned calculators are only estimates, so I shouldn't expect exact figures. I'm just wondering how extra weight affects calorie consumption.
I got one of those Bell pumps from WalMart like 30 minutes ago, and it pops and leaks air and is not working at all. I don't see how I could be doing anything wrong. Is it just already broken or what?