a good lower cal diet and lots of cardio is how you lose weight anywhere. You cant choose where you wanna lose weight from. Working out your arms will only make ur arm muscles bigger, it wont make you lose arm fat. Targeted fat loss is impossible.
Anyone trying to lost weight fast should look into the Acai Berry. It is one of the most nutritional foods on earth. The high vitamins and anti-oxidents in Acai contributes to rapid weight loss.