Square breathing is a simple technique which can be used to bring about a sense of calm. You can use this with your child to help them relax if they are feeling stressed or anxious. And if you do it with them then you will get the benefits as well! It has been used in many professions, including by Nurses, Athletes and Navy SEALs. As well as helping to relax to body and mind, it has been shown to help control blood pressure, to treat insomnia and help with pain management.