The way most people do pull downs and chins. This results in the biceps getting more work. Click Image to Enlarge. Chin-Ups. Click Image to Enlarge. Pull downs. Chin-Up Video Guide. Windows Media megadrox (243 KB) MPEG (554 KB) Pull-down Video Guide. Windows Media (264 KB) MPEG (599 KB) Leaning back and puffing the chest out to meet the bar as you do the exercise forces the arch into your lower back and....

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