Full Body movements that include the core. For example: Squats, push ups, pull ups, planks, side planks, hip drives. As long as you contract you core during these activities you will see a huge improvement in your whole core and overall body, compared to just one certain area. Crunches are not a bad thing, but they are not a “bang for your buck” situation. I believe in quality over quantity, so full body movements is my winner! Here is an example outline of what my week would look like when it comes to “Core training.” 3 Days a week Full Body Core concentrated training and 1 day a week of crunches.