Not that it was formal exercise, but I think it's more activity than I've had in a while:
At church youth group where I'm a leader, running arround shooting finger rockets at teenie boppers and macho teen boys for 10 - 15 mins. Then afterward walking around the neighborhood searching for one of our teens who we couldn't find.

(No we weren't playing hide-n-seek.) Finally we found out that he was with his Big Brother and of course, remembered to tell his mother

.... Mystery solved.