The 4-Hour Work Week: Escape the 9-5, Live Anywhere and Join the New Rich

by Timothy Ferriss

2. Check e-mail twice per day, once at 12:00 noon or just prior to lunch, and again at 4:00 P.M. 12:00 P.M. and 4:00 P.M. are times that ensure you will have the most responses from previously sent e-mail.