Science
7 min read
Why Your Afternoon Brain Fog Is Not About Willpower
New research reveals the biological mechanisms behind the 2pm slump — and how HRV data can predict it hours in advance.
DSC
Dr. Sarah Chen
March 15, 2026
Insights & Research
The Auroli Journal
Science-backed insights on wellbeing, cognitive performance, and the biology behind your best days.
Stay in the loop
Get weekly insights on wellbeing science and cognitive performance delivered to your inbox.
No spam, unsubscribe anytime.