This no repeat, dumbbell abs workout is a targeted routine for the abdominal muscles and core with just one dumbbell! The weight you use is completely up to …
source
15 Min DUMBBELL ABS WORKOUT at Home | Follow Along No Repeat

This no repeat, dumbbell abs workout is a targeted routine for the abdominal muscles and core with just one dumbbell! The weight you use is completely up to …
source