Last week I decided to weigh all my female clients' handbags when they came in for treatment and I was astounded at the results.
Most weighed in around 2.8 kilos!!!!! That's heavier than my dog.
The impact that this weight has on the alignment of your body, is something that can be avoided by cleaning out your bags regularly or buying a smaller one.
You may also want to consider changing it regularly to the other side.