Continuing with the Art of Problem Solving: Introduction to Algebra book that I'm studying with the help of zedzed (see here for an explanation; last update was in the June 16-30 Rationality Diary):

Grades for chapters 12-15:

• Chapter 12: 91 out of 106 possible
• Chapter 13: 110.7 out of 125 possible
• Chapter 14: 104 out of 106 possible (almost perfect that time!)
• Chapter 15: 107 out of 121.5 possible

Also, finally(!) found an exercise routine that I think works for me. I've had multiple issues with other routines - I'm often very tired during the times I have available for exercise; my knees / ankles / back / neck hurt sometimes when exercising; I have frequent stomach problems and vigorous exercise often makes me very nauseous; and I'm not so great at self-discipline. The program I've been using is The Complete Book of Pilates for Men, which my wife discovered. It starts out very low-level and builds up from there, so at least for now it's not so active that I can't do it when tired or when my stomach hurts; it has modifications for hurt knees / back / neck; it's very low time commitment (at least for starters); and I reward myself with a small cookie or piece of cake when I'm done (+ it makes my wife happy).