Jennifer Garner showed off her banged up elbow and scabby knees on Letterman Wednesday night.
Garner said she took a header out on a run one day.
"I wasn't even making an action movie or anything. If you do it when you're making an action movie, you feel cool. When you do it when you're just running on a beautiful day in front of a lot of people, you don't feel so cool. You think you're anonymous and suddenly everyone's like 'Jen Garner just fell down! Jennifer, do you need help?!'"
With that Dave whipped out some ointment and started dressing her wounds.WATCH: