Biceps brachii is the main muscle group of reverse grip pull-ups, latissimus dorsi is the main muscle group of positive grip pull-ups, and Biceps brachii is only an auxiliary muscle group. Our daily arm utilization rate is much higher than that of latissimus dorsi, so the development of biceps brachii is higher than that of latissimus dorsi, so people who have just come into contact with pull-ups will find it easier to persist backwards than forwards.
Based on the above reasons, it is necessary to choose the action reasonably in order to achieve the ideal sports effect.