Same with hitting. Buddy of mine compares it to spinning a top; they tighter you spin it, the longer and quicker it will go. Key is getting a good core stretch.
I've recently implemented it into swinging a golf club and it feels like a cheat code with half the effort leading to higher velocity and distance.
edit to add: the way we try and help teach this now for qb's and pitchers alike is a single leg RDL with a kettle bell; basically, we want guys to get the hip hinge to be able to work on moving forward without losing ground backwards. You can implement medicine ball/core work as well, but again the focus has to be on gaining that stretch back WITHOUT stepping back. You should feel like a rubber band, gaining tension and torque easily on the way back while staying tight, and then when you release you should not "push" or thrust forward, which would cause you to lose energy, but rather stay tight and "crack the whip."