Mindfulness colouring books are a huge trend right now and have been named in the top 10 gifts to give this holiday season. But do they actually work to reduce stress? Many believe yes. Although experts are quick to dismiss adult colouring as a form of art therapy or mindfulness practice, this type of colouring has been proven to provide a form of relaxation without the need for any complex skills. Check out the following from Discovery on the adult colouring book trend and try one today.