Recovery time after e-mail and phone calls
I have for some time tried to put my phone in silent mode and turn off my e-mail program before lunch. I am most productive in the mornings, and being able to work 3-4 hours without any interruptions, is very valuable. My solution to the problem of minor (and larger) interruptions has come out of a need of getting more concentrated time to focus on working in the lab, programming, writing papers, etc....