This exercise can be done at home using water bottles, etc. as weights instead of dumbbells in the gym.
- Stand with feet hip width apart and a dumbbells in each hand. Keep the weights close to your body throughout the exercise.
- Bend slightly to the left, keeping the weight close to your left leg.
- Come back up to center, then bend slightly to the right.
Do 10 - 12 reps on each sides
Alternately, you can do all desired repetitions on one side, then switch to the other side.