I don't like to use just other, that say's I haven't given my activity a type.
Can you please add stretching/yoga.
It is a very important part to overall fitness.
At this point I'm using Flying (if only we could).
Also, how about an event type for Rehab/Recovery. 'Fitness' doesn't quite fit while I am only walking 1km to recover from a broken leg. It could be interesting to see who is recovering from injury.