Planks are one best ways to build strength in your core. Master these moves and feel the difference every day. A tight and strong tummy is a happy body. Every move stems from your mid-section so lets get on the floor and work that core. Planks are a great way to avoid straining your neck and back from poorly performed sit ups. Be sure to listen to the cues from Trainer Becca to stay safe. Enjoy this challenging video and share with your friends!!