hard drive memory

well i can't really think of a reason off hand unless you are deleting and downloding things to yoru computer. but some fluctuation in space, just a little, i would think be normal as the operating system makes changes all the time. how much space are you losing gaining and at what intervals
 
i need more specific than not a lot, is it 1gb or more? less? megabytes maybe? just trying to gauge at least

but in my opinion it doesn't seem to be anything to worry about, unless someone else has a pretty good insight onto what's going on