Set-up: Clear a space in front of you, and grasp a kettlbell with a goblet grip - where both hands grasp the top portion of the bell in an upwards motion.
Movement: Step forward onto your heel, keeping your knee behind and in line with your toes and your hips level. Brace through your stomach and do not allow your lower back to round. Descend until just before your knee touches the floor. Then - pressing through your heel and not the toes - step back to the start position. Perform the desired number of repetitions and repeat with your opposite leg. Use the muscles of your core to maintain stability.
Repetitions: Perform all prescribed reps on one side, then on the other. This counts as one set.