What’s the most fun way to exercise?

This has to be the most fun way to exercise!

Recipe:

1 dog (any size)

I lead (any length)

Method:

Take dog outside, attach lead and start walking.

Time: 30mins to 3 hours.

Dog is done when it stops playing. This may take several hours, depending on model of dog. Border Collies are never done. You have been warned.