Pull-ups are among the best exercises for developing strong lats and wide shoulders. Whether you're already proficient at doing pull-ups or you can't perform even one, following a progressive workout schedule will help you build the strength and endurance necessary to complete 50 consecutive pull-ups.
Start With Multiple Sets of Low Repetitions
Start out by performing several sets of only a few repetitions and build your way up to 50. For example, complete five sets of 10 pull-ups, or -- if that is too challenging -- try 10 sets of five pull-ups. Rest between sets. Gradually adjust the set-repetition combination until you can complete 50 pull-ups in a single set. Include pull-ups in your workout every two to three days.