Tentative hypothesis: You were in a low energy state since October, and reading the forum was an indication that you were beginning an upswing rather than specifically a cause of more energy.
If I'm right, then it makes sense to look back a little farther to see what might have started the upswing.
This is the public group instrumental rationality diary for June 1-30; it's going up pretty late (sorry!) but entries for earlier in June are welcome.
Thanks to cata for starting the Group Rationality Diary posts, and to commenters for participating!
Next diary -- July 1-15
Immediate past diary -- May 16-31
Rationality Diaries archive