I play 5s indoor on a Monday, then anything from 5s to 8s on a Thursday outdoor depending on how many turn up.
I've been playing the Monday game for nearly 18 years now, there's still a few from when I first played but I always find it amazing how the group transforms over time through friends of friends coming along.
I do loads of exercise but I thoroughly enjoy my two games a week and I'll be playing on as long as I can.