wristsavr — forces you to take a break.

wristsavr saves your wrists: it periodically zwrites & xlocks your screen to remind you to take a 2 minute break. This is a little ditty that I whipped up last night to avoid working on my operating system.

usage: wristsavr [-hb] [-m mins]
    -h        Display usage information.
    -b        Bully mode.  If xlock terminates before two minutes,
              xlock the screen again.
    -m mins   wait mins minutes between wristsavr notices (defualt 45)