I am starting to use the Things App for Mac and IOS and am running into a snag. How can I create and classify certain categories within my areas of focus that are not necessarily projects but are smaller than areas of focus? For example, I have an AREA OF FOCUS CALLED PHYSICAL HEALTH. However, within Physical Health, I have about 6 CATEGORIES that need constant attention but are not necessarily projects that require completion. They are Sleep, Cardio Health, Heart Health, Diet, Flexibility and Strength. None of these classifications are projects per se, and indeed, many of these categories will have projects underneath them. because they are never-ending. However, they all deserve specific and constant attention by me. How can I make these categories something in between Areas of Focus and actual projects? I want to make sure that I am constantly focusing on attaching growth and projects or tasks to these areas of my physical health. What the heck are these categories called, and for anyone using Things, are these headings? Tags? Should I just set up a reminder checklist in my weekly review to make sure I am focusing on all 6 of these things? Thanks in Advance.