I notice this sometimes, at times I have been all over my dog and getting lots of cuddles, and since then i have stopped doing this, I noticed that he would lick his lips and feel some anxiety.
I do, however, still have a lot of touch with him, im just less in his face, and I often allow him to make the decision too, when he chooses to hug me or be close to me it seems like he is fulfilling his desire to be close to me, rather than me pinning him down haha. if i choose to sit on the grass outside, he will often just come and sit and lean against me.
I have seen people interact with dogs, and they treat their dog like a teddy bear and it seems that this stresses the dog.
I wonder how the emotional state of the human touching the dog affects the dog's stress levels.