Mandala designs

Some people say that colouring makes your stress go away. I've learned that there are some patterns called mandala and from the Internet you can download,print them out and colour. Because my son will take important exams on Wednesday and Thursday I think some colouring helps us relax. One for me and one for my son.
Also there is a popular colouring book for adults and I see it a lot at the bookstores or social media these days. The name of this book is 'Secret Garden' if you're interested.