You don't need crunches to build a stronger core, just try these three kettlebell ab exercises designed by a functional ...
Build strong core muscles without weights, just using these three crunch variations from a functional training coach.
Although exercises like sit-ups and crunches can activate these muscles, that only trains one type of movement. The core is also involved in moving your body from side-to-side, and when you rotate.
How to do it: Suitcase crunches are a variation of traditional crunches that target the abdominal ... your workout; incorporate this workout into your regular fitness routine for optimal results.