How to do (Video)...
Step By Step
Step 1: Stand tall with your back straight and feet shoulder width apart. Hold on to 2 equal weight dumbbells by your sides. Step 2: Simultaneously, step your right foot forward into a lunge and twist your torso bringing the dumbbells over to your right side. When doing the lunge, lower your body to the floor until your right knee is at a 90-degree bend and your thigh is parallel to the floor. Your back leg should bend and lower as well but not touch the floor. Step 3: Return to your starting position by retracing your steps and pushing out of the lunge as you twist your torso back to center. Alternate sides and repeat the move until you have tired the muscles being utilized. Using heavier dumbbells will make it more difficult. Try the twist without any dumbbells to make it easier.Benefits
This compound move works your core, butt, and legs (hamstrings, quadriceps, and calves). Rugby players would benefit from this exercise because they need both leg and core strength. In general most of us could benefit from stronger legs and core, to avoid those pesky back injuries.
Superset with
Dumbbell Squats, for additional training of the butt and leg muscles.