Opening a Refrigerator with a Mug Suck

The main technical challenge is establishing sufficient suction beforehand to maintain mug contact during the rapid increase in force when you start pulling the door open. It’s an inverted U shaped force curve – opening the door takes a spike in pulling force, but once it’s opened, little force is required to continue opening it. This ‘whiplash’ is hard to get used to if your primary experience is heavy mug sucks. For efficiency reasons, you should practice maintaining the minimal suction necessary to accomplish your objective. This means modulating suction throughout the course of the action - a skill totally distinct from max effort heavy mug sucks.