Add time as you get stronger and more confident. You could also mix some Swiss ball planks and work between moving and static exercises as part of a core-strengthening superset.

You could have your diet nailed and already be practicing a list of your favorite training exercises. But if you're simply ...

While doing crunches and situps may activate the abs, these exercises don't target as many core muscles—like your ... out while holding a medicine ball. Perform a lunge then rotate your torso ...