Get a G-Shock watch and set the countdown timer to whatever duration suits you. Given the 20:20:20:20 rule I saw above, I figure a 20 minute countdown probably

Get a G-Shock watch and set the countdown timer to whatever duration suits you. Given the 20:20:20:20 rule I saw above, I figure a 20 minute countdown probably isn't a bad countdown. At school, I was taught that we have a short attention span of something like 10-15 minutes, so you could always do that. Every time the alarm goes off, go for a walk around the office. Not quite what you were asking for, I know.