Large file size on a simple excel file

Field Haven,

Here you go!
Look at the second tab, you have the Column A to F selected all the way to the bottom.
Click in cell A1, then do Ctrl+Shift+end, this will highlight the data area, you will see what I mean.

The easiest way to clear, is click in A 413 and do ctrl+Shift+end, then delete. Do the same on column F, I got the file size to 32kb as attached