Intellectual

Focus, memory, and logical clarity — high means decisions and learning come easier, low means double-check anything that matters.

• ✦ Runs on a 33-day cycle from your birth date
• ✦ Peaks around day 8, bottoms out around day 25 of each cycle
• ✦ Traditionally linked to focus, memory, and logical clarity

• Do Biorhythms Actually Work? What the 23/28/33-Day Cycles Mean →
• What Are Biorhythm Critical Days, and Do They Matter? →