Should i caulk around the window on the inside of my house? it's getting a little cold and drafty contained by my house. besides...

it's getting a little cold and drafty contained by my house. besides caulking on the outside of windows should i also caulk on the inside of the porthole?
Why did sand come through when I put...
Answers:    No. You caulk on the outside. You can add weather stripping on the doors and cover the window in plastic shrink wrap, but no caulking. How could you caulk a pane from the inside?
Silly request but im questioning for a mower...
YES AND CHECK YOUR DOOR STRIPS ALSO