It's Friday the 13th, but don't fear. Instead, do ...

It's Friday the 13th, but don't fear. Instead, do 13 of something today! Do 13 pushups. Run or ride 13 miles. Do 13 pull-ups. Swim 13 laps in the pool. Eat 13 pieces of broccoli... Let us know how you have stared down Friday the 13th! Post a photo, too!