Think Twice Before You Check That Email

Today's post comes courtesy of my friend Bernie, who knows of my struggle to break my email addiction:

"It takes 64 seconds to retrieve your train of thought after interruption by email, one study shows. That means if you check your in-box every 5 minutes, you waste 8.5 hours a week. Try intervals of 45 minutes, and turn off the 'new e-mail' pop-up alert." (Source: Thomas Jackson, Ph.D, Loughborough University)

How about it? How often does everyone check their e-mail throughout the day?