Inhale through the nose and do another quick inhale at the top before you exhale to completion. Just like you naturally do after a good blubbering cry.
According to neuroscientist, Andrew D. Huberman, that’s the fastest (scientifically proven) way to slow down your heart and reduce stress.
Repeat for as long as needed. The more often you do it on a long term basis, the greater the impact.
So use it daily.