I dont get the Reverse Kegel

Sorry but I’m having trouble really understanding the reverse kegel exercise. I’m basically pushing down on the area below my balls? I don’t get what this does. I don’t really feel anything besides discomfort

I’m also a bit confused, as I’m not sure if I’m doing it right. Is it meant to be like when you’re pooping or when you’re trying to stop it (or say urine or gas)??

Pooping/peeing . Just obv without pooping/peeing.

The reverse kegels are like softly trying to pee and normal kegels is like trying to hold it in