Couch potatoes are important too! And from the looks of it she was a pro.

Mine should enjoy agility in theory - she's super smart, easily bored, very nimble and needs a lot of exercise. I don't know if she's being considerate by trying not to expose her clumsy human to such situations or if she just thinks such simple challenges would be degrading to such a majestic animal as herself.
At least our slightly overweight french bulldog (of all things) is ultra-motivated as long as there's a treat waiting behind every other obstacle.