In taekwondo, the downward block, or low block, is generally performed to defend against a kick to the groin. Use this important defensive tactic withtips from a martial arts teacher in this free video on taekwondo. Expert: John Graden Contact: www.JohnGraden.com Bio: John Graden is a business owner, author and motivational speaker. He uses hypnotism as part of his training program. Filmmaker: Christopher Rokosz