Here's Ron: The problem with any one exercise is that, sooner or later, you get tired of doing it. The only thing that should be "routine" about a good workout routine is that it's well balanced. You should be switching up exercises and movement patterns as often as you can.
Instead of performing only one exercise to strengthen and lengthen a particular muscle group, it's smart to have two or three different ways to hit that same area. For instance, many of you probably work on your core muscles by doing planks or leg lifts or torso raises on an incline bench. (Let's hope you are not doing crunches or sit-ups or anything that violently compresses your vertebrae.) But instead of doing just one core exercise, it's a good idea to alternate between two or three from workout to workout--not
So if you're weeks or months into your workout program, it's time to switch some things up. If you're looking for a new way to challenge your core muscles, click on the video below.