This video is part of a series demonstrating the first part of a dynamic warm up: neuromuscular activation.
Engage the deep abdominals in your core. Imagine that your belly button is the front part of a metal snap that you might find on a jacket, and the back of that snap is located on your spine. Envision snapping that button closed. To further facilitate deep abdominal activation, lean back on one leg and hold it for 6 to 10 seconds. Then switch to the other leg. Complete 2 to 3 repetitions on each leg.
A shorter demo:
Videos in this series: