Size of Recovered Excel workbook

I had an Excel workbook that was 2,200 KB. Excel stopped working, and recovered the workbook from an Auto-saved version. Now the workbook is 18,000 KB. Does anyone know the reason for the huge difference? I have added functionality, but nothing significant. Is there a way to reduce the size of the workbook?

Thank you!
KarlaM

I use one sheet as a 'Status Log' that sometimes has several thousand lines in it. When I do that my workbook balloons to the size you mention, even when that sheet is deleted, and the workbook saved, of 'saved as'.

1. Open the original file.
2. Right click one of the 'Sheet Name' tabs on the bottom of the original file.
Select 'Select All Sheets'.
3. Right click one of the 'Sheet Name' tabs on the bottom of the original file.
Select 'Move or Copy'. Select the 'Copy' checkbox. Copy to New Book.
4. If you have any Macros, export the modules one at a time. Count the number of modules you exported.
Do the same for any UserForms, Worksheets, that have code, etc.
5. Import the items from Step 4 into the New Workbook.
6. When you save the New Workbook the size will be a lot smaller.

WARNING: If you have any Macros assigned to command buttons on the sheets make sure that the
NEW WORKBOOK is the file that is referenced for the assigned macros.

Thank you so much for your quick responses. I think you are probably right about the "junk". I tried as you suggested with exporting and importing macros and copying worksheets from the old workbook to the new. It worked like a charm!

Thanks!
KarlaM