The Single Arm Snatch is a full body exercise which helps build explosiveness and power. Your back, shoulders and triceps are targeted in the upper body, whilst the hamstrings, quadriceps and glutes are targeted from the lower body. The core is also active throughout.
The exercise starts with your feet just wider than hip width apart and a dumbbell or kettlebell placed between them. Reach down, bending your knees and grab the weight with one hand. You should then drive the weight all the way up until your arm is fully extended above your head.
During this movement you will drive your arm from straight, at the bottom, to bent through the middle, with your elbow out and then back to straight at the top of the movement. You will go back through this movement on the way down.