Pressure comes in many forms in dog training. Positional Pressure, Performance Pressure, Environmental Pressure, the Plane of the handler’s body.
Pressure is a fact. How you wield it or leverage it is up to you.
Dogs tend to avoid Pressure and tend to hang out in areas where the Pressure is lower and can be pulled into areas or situations by releasing or pulling with Pressure.
Turning to face a dog adds Pressure, and turning away from the dog releases Pressure. Leaning over a dog is increasing Pressure, leaning back away is releasing Pressure.
Front position on a retrieve is just packed with Pressure. It’s a wonder dog’s do it at all.