Chest to Bar Pull Up
Unlike regular pull ups, the chest to bar movement requires more swing (when kipping) and strength. Since you must achieve a higher body position.
Many athletes struggle with getting their chest up to the bar because the whole movement differs a regular pull up. When kipping, you must push your swing higher and pull yourself to the bar at the right time.
The gymnastic swing with the arch and hollow positions benefits all the hanging exercises, with a strong core and upper body you must learn how to swing the right way.