In fruit flies, specific neurons in the brain adapt to help the insect remain alert in dangerous situations and fall asleep after a trying day. The findings could help in the development of new therapies to treat sleep disorders in humans.
Extended intense cognitive work causes potentially toxic byproducts to build up in the prefrontal cortex. This alters control over decision-making, causing a shift toward low-cost actions that require less effort as cognitive fatigue sets in.
If you feel anxious while at the wheel, you are more likely to feel exhaustion when you arrive at your destination, a new study reports.
Lonely people are 24 percent more likely to feel tired and have a harder time concentrating, a new study reports.
Habitual short sleepers might be more efficient sleepers, but also more tired than they realize, a new study reports.