Pull-Ups, Chin-Ups, and the Raw Power They Build
Pull-ups (and chin-ups) are an exercise that every serious strength athlete needs to master. They build brute, raw, unadulterated strength in the upper body -the kind that you cannot get from lifting weights, and certainly not from working out on machines in the gym. This exercise is more than worth it's weight in gold, but is unfortunately ignored these days by most people.
Read more at ezinearticles.com