Back To Basics: How To Master Your Core

Countless crunches, endless leg lifts, a multitude of mountain climbers — if you're anything like us, you've tried everything (like, everything) to get that core in tip-top shape. But, we've got a little secret to share: When it comes to your midsection, basic is definitely better. We brought in pro-trainer Jessi Kneeland from Peak Performance NYC to help us get our core game up. Scroll through for tips on mastering your planks and push-ups for a rock-solid core. You'll also receive toned arms and shoulders as a bonus gift. You can thank us later.