I just noticed this last night when I did a short training session with Sandy before bed.
Now when I train Sandy, I'm standing in the kitchen or where ever but I'm standing. When I train Maze, I'm sitting or puttering or whatever.. But I'm not always standing.
I didn't think anything of it until last night. I was sitting on the edge of the bed doing focus training with Sandy and she just wasn't in to it. BUT as soon as I stood up, I had 100% focus. So now I know I have to keep standing when working with Sandy. Lol!