I find that very true with my dogs too. We as helpful members always say to exercise them to keep our pets out of trouble, but in my experience, there is a balance for that. If I exercise them as much as their "will" will go, then I'm only building the stamina up in my dog. Like an athlete on 4 legs

Now, does that work in your favor? Well, depends on what you do with your dog and what you want out of your dog. Competing or want to be active yourself? You definitely want to slowly build up their endurance... but be warned! That means it will take even longer to tire them out as that endurance builds. Stay at home pet where you want them to simply CHILL out? Exercise them about 45 min to an hour a day give or take depending on the dog.