In 2015 Andrew Heisel wrote an article about Biorhythm Theory for the Chicago Tribune. He pronounced Biorhythm Theory Dead. Within the pages of this book you will find compelling evidence that these cycles exist.
In the late 1970s Gil Brandt of the Dallas Cowboys "openly" used Biorhythm Theory". He later abandoned it when he lost a Super Bowl. You will see why Gil Brandt's decision was premature.
At minimum you will behold one of the most breath-taking events in all of sports— "The 59" in golf.
You will leave with insight and a much better understanding how that precious four inches between your ears sometimes succeeds and sometimes fails!