How is a natural break different from a Guardian break?
A natural break is any time you stop working at the computer on your own. Because natural breaks are often breaks from the computer during which you do other work, Guardian conservatively assumes that natural breaks allow you to rest somewhat from trauma, but not as much as during an actual break. Therefore, to make Guardian’s model work, it is important that during an Guardian-imposed break that you really rest. Get up and walk around and/or stretch. Do not do other work that is stressful to hands, eyes, shoulders, etc.