This is an advanced exercise that combines a lateral lunge with a bicep curl.
Grasp a dumbbell in each hand with your palms facing up. Stand with your feet together, your back straight and your abs drawn in. Allow your arms to extend down fully in front of your thighs. While keeping your body straight, take a step sideways and then bend your waist and your knee into a lunge.
As you go into the lunge curl your arms up towards your shoulders contracting your biceps.
Return to starting position and switch legs.
Have a Personal Trainer or Instructor show you how to properly perform this exercise.