@david_c Continue to do what? If you're talking about jumping up on people, that's a behavior that many people reward by giving the dog what they want when they jump up (attention). Overly excited dogs can be trained to chew on a toy or perform another acceptable behavior as an outlet, or they get the zoomies.
There is a reason why vet clinics have tons of various treats at the ready. Simply leading by example is not enough for many dogs. I work in a research lab where we test veterinary drugs on dogs. Believe me, calm energy and even pets are not enough and for the dogs we can give food treats, they often refuse because while they aren't trying to escape, they are still anxious. They appear relaxed on the outside because of their stillness, but it's a kind of robotic stillness. When they go back in their cages it takes them a minute to "snap out of it". It's very sad. They live a life where almost all choices are taken away from them.
Dogs that resist handling or procedures are simply restrained harder because the job needs to be done whether it's nail trims, dosing, etc. Most people I work with are not experts, just employees hired to do the basics. It's amazing working in a scientific research facility with dogs that there is no requirement to learn the science surrounding dog behavior. Most even think the tail wagging that goes on when you're putting a tube down a dog's throat means the dog is somehow happy this is going on. Anxiety tail wags are certainly a thing and the only way they seem to express their emotions when they aren't allowed to go anywhere.
Cooperative care is something zoos train their animals for yet we do not, though 2 of us are trying to change that at least for some things like nail trims for example. All dog owners should teach cooperative care imo. It's very much worth it rather than aiming for that learned helplessness state because of convenience. Choice builds confidence and confidence leads to decreased stress. Canine Enrichment for the real world is a great book that talks about agency as a type of enrichment. Every living creature thrives when they feel in control of their environment and bodies, and we have the power to give them that feeling through cooperative care training.