What is the 2-move CrossFit ‘Midline March’ workout, and could it build full-body muscle and a stronger core?

The CrossFit WOD (that just means Workout Of the Day) is a core component of functional training and CrossFit classes. CrossFit releases a new WOD daily, hence the name, but these workouts could be done at any time and slot into any exercise regime using a set of the best adjustable dumbbells…