Pull-ups are not called a supreme discipline for the back for nothing - although they look easy at first glance and many still know them from their school days, they prove to be extremely nasty in their execution as well as in the course of a regular training program. Even as a pure weight training (so-called body weight exercise, for short: BWE), pull-ups often cause worry lines - they are almost indispensable both as back exercises and through their character as a compound exercise.