sleep deprivation
Zoning Out After Staying Up Late Isn’t Your Fault — It’s Your Brain’s Self-Rescue Mechanism | Nature
Staying Up Late Can Make You Less Sharp — Now Backed by New Science Sleep deprivation is known to cause loss of focus, but now researchers have uncovered the physiological mechanism behind it — your brain may literally be undergoing a “wash” while you’re awake. --- MIT Study: Attention Lapses Trigger