is that email a tiger?

“Always on” may not be the most productive way to work. One of the reasons for this will become clearer in the chapter on staying cool under pressure; however, in summary, the brain is being forced to be on “alert” far too much. This increases what is known as your allostatic load, which is a reading of stress hormones and other factors relating to a sense of threat. The wear and tear has an impact. As Stone says, “This always on, anywhere, anytime, anyplace era has created an artificial sense of constant crisis. What happens to mammals in a state of constant crisis is the adrenalized fight-or-flight mechanism kicks in. It’s great when tigers are chasing us. How many of those five hundred emails a day is a tiger?”

(from Your Brain At Work by David Rock, quoted by Matt Perman)