A breathing pattern of a 2-second inhale and 1-second exhale increases adrenaline, leading to increased alertness and physical sensations like facial flushing and body heating.

“So it's essentially, excuse me, a two second or so inhale and then a one second or so exhale, and as I was doing that, I can kind of feel my face get flush and my body is heating up and my brain is heating up, what's happening there? Well that pattern of breathing is increasing levels of adrenaline in my brain and body, and I'm getting more alert.”