Pull-Ups / Chin-Ups can be done in 2 ways; with either an overhand grip (palms facing away from you) or underhand grip (palms facing toward you). A wider grip targets your lateral muscles while a narrower grip targets your middle back. Beginners should exercise so that your chin reaches the bar.  For a tougher exercise, try pulling your chest up to the bar. Pause before lowering yourself. Pull-ups are a strenuous activity, please consult your physician before attempting this activity.