In this video tutorial, viewers learn how to perform the dumbbell punch pull core exercise. Viewers will need to use a tight dumbbell to lift and a pair of heavy dumbbells to support the feet. Start by lying down on the floor with the left hand up and right hand holding the dumbbell. Now slowly raise up the right arm and lower the left. This should be done at a strong and steady pace. Alternate and switch to equalize both sides. This video will benefit those viewers who are want to strengthen their core muscles, build abdominal muscles and lose stomach fat.