If yardage gains are among your aspirations for game improvement this year, TheStack is a worthy investment. The best news?

Back in a 2006 issue of GOLF Magazine, Peter Kostis broke down a key "X-factor" that pros use to add serious speed to their swings.

A few weeks ago a reader of my Golf IQ newsletter (which you can sign up for via Golf Digest+ right here), asked an interesting question. He was worried, in short, that one of his arms was so weak ...

Four months ago, my husband, Paul, started using TheStack - a swing speed trainer co-created by biomechanist Dr. Sasho ...