Recognizing the core muscles, turning your back leg.
Pick your leg up and turn, nice and easy to start, get your hips into it a bit more this time, making the L-Shape, akin to hitting on game day, in this case, lifting your foot off the ground; in the game the back leg, spin-speed produces the momentum, leading-to weightlessness.
Move your arms and the bat, using the core-turn, swinging the bat without moving your arms, coaching the middle part of the swing; where the magic happens! Staying connected, and turning to hit the inside fastball, understanding the concept, keeping the “hands inside the ball.“
3 sets of 5-10 repetitions, training the movement, you’re ready to take batting practice.