Many people set their e-mail programs to check for mail every minute. That’s building 480 possible interruptions into each workday. An interuption to read an unrelated email can cause you to lose concentration and start over again on many tasks. It is rare that your email needs a response in 60 seconds. Set your email program to check for email once or twice an hour and you’ll stay more focuced in your tasks. Also read CNN’s article E-mails ‘hurt IQ more than pot’.