If you are a Kravologist seeking to take another step forward in stress management, I’d highly recommend the box breathing app for iOS by Unbeatable LLC.
Box breathing has a myriad of benefits – most significant is the access to the “executive” brain (the pre-frontal cortex) that is often unavailable during stress-filled events. Box breathing also creates more access to the parasympathetic nervous system that offers added benefits, such as lower heart rate, blood pressure, and digestive support (to name a few). So, check out the box breathing app from Unbeatable, LLC – it’s a great investment at about three dollars.