According to science, hitters and pitchers are objects that possess energy, and use it in the form(s) of potential, kinetic, elastic, and mechanical energy. Basically, you must create and transfer energy from yourself into the baseball.
BREAKING IT ALL DOWN
Every training technique and performance result is effected by energy flow. Optimize what it takes to create and move energy, so you can maximize your performance.
1. You possess energy, and its capabilities are enhanced by gravity and how efficient you transfer energy through your joint axis points (knees, elbows, ankles, etc).