How do you increase productivity?

I work when I have time (married with two hyper kids), but I make a break every ~2 hours, for at least 15-20 minutes - go to the toilet, drink water, whatever, just get up and go away from my comp.

and when am I working, I listen to the quiet, relaxing music - Sade is often my choice ... and when I am not working, something much louder

Also, when working, I stay away from smartphone, emails, forums etc. Distractions to the minimum ...