Thanks everyone for their advice. It's not a big problem but would be nice to curtail to some degree.
Exercise-wise Elsa goes for two beach runs on every weekday (about 2km each) and two longer beach runs (about 7 -8km each) on the weekend. She handles this with ease and runs her little mate Butch the red kelpie into the ground.
I would probably say my girlfreind would be her 'leader'.