20240102

 Slept until 10, but not well. Got up at midnight to continue the refactoring. Played piano and then did a cycling exercise (while watching a football game) after 4. Started to watch Hakone Ekiden (箱根駅伝) at 6. Turned to refactoring again around 8, but didn't work very long, because the round of refactoring had already been completed. The race was more funny than I had expected. Went to sleep after lunch, after today's race was over. OK, not over, after the first three athletes had completed the first half of this race. Got up around 5:30 to have dinner. Completed 15 pomodoroes today - one for learning, three for exercise, and eleven for work.