A One-Sided Argument
If you are looking for a great way to build stability in your core, neck and hips, perform strength work with uni-lateral loading, aka holding a weight in only one side. This forces your stabilizers to react and kick on to fight side bending and twisting. Here are just a few good examples:
-Walking Lunges or Step Ups (Holding a dumbbell in one hand)
-Single Arm Overhead Pressing
-Single Arm Rowing
-Suitcase Deadlifts