A baseball swing is a very finely tuned instrument. It is repetition, and more repetition, then a little more after that.
Sometimes when I get home after a long day, I'll turn on music - I love Latin, disco, and pop - and do my own workout, even if it's a short one. Know a good song to work out to? 'I Will Survive.'
Trust your gut instinct over spreadsheets. There are too many variables in the real world that you simply can't put into a spreadsheet. Spreadsheets spit out results from your inexact assumptions and give you a false sense of security. In most cases, your heart and gut are still your best guide.

