The purpose of adding distractions when you say "Stay" is to teach your dog that it is worth responding to your cues, despite the fact that the environment around your dog might be more interesting. Your dog should obey you anywhere, anytime, and under any circumstance. This is called reliability. You want to be able to rely on your dog to obey, no matter what.

To get a high level of reliability, you must practice with your dog in new and different environments where distractions occur naturally. Pia will help you learn to get your dog to be reliable when told to Stay, regardless of what is going on around your dog as well as beginning to add distance between the two of you.