I agree TOMO I dont think it tightens feet either.
Work, work, and being out and about as much as possible...when getting a dog fit for big ears, i have biked and trotted them behind the car...but its boring.much rather be hunting.
A example is a farm collie out everyday working, its a fit dog with stamina which goes all day..no roadwork there If you have time to get your dog out and about daily, you should maintain a reasonable amount of fitness.
Spot on mate, as you say a farm collie is a tough and fit dog . You dont see them doing road work
my 1x collie grey as got g