I've been using a modified version (50 minutes work, 10 minute break) for about 3 years now. It's invaluable and I don't even use a timer anymore. I don't eve

I've been using a modified version (50 minutes work, 10 minute break) for about 3 years now. It's invaluable and I don't even use a timer anymore. I don't even stay at my desk for the 10 minutes, I go chat, or step outside, or grab some coffee. I think just the act of getting up, away from the desk does more than being on a short deadline.