Dumbell Bench Press for Better Chest Activation

Jeff Cavalier with Athlean-X goes over the various hand positions when pressing dumbbells and how they can change which muscles are activated.

Leading with your thumbs from a standard press position will put more on your chest while leading with your pinkies will put more on your triceps.  Holding the dumbbells in a prone position will result in more on your shoulders.  Watch the video for details.