Hitting is more than just swing mechanics.
A question that I receive often is from parents or hitters asking about timing or how to fix “lunging”. In my experience, 99% of lunging and timing issues have to do with hitters loading and striding too fast. They “get their foot down early”, disrupt a great swing rhythm by stopping and going again or spend most of their swing energy before they even swing the bat.
All hitters should work to understand the concept of Slow To Fast. I like to use the term “Slow To Explode” with my hitters. I even have young hitters that like to use the phrase…KAAAAA-BOOOOM!
The concept of Slow To Explode is best described as: The hitter starting their swing slow and relaxed, and their bat speed increasing at and through contact.
Jose Bautista of the Toronto Blue Jays has said that his key to going from 14 HR a year to over 50 was understanding and mastering the concept of Slow to Fast.