COVID-19 lockdowns gave many teen girls a mental health boost by giving them a break from their busy lives. They even got more sleep.

Very young children learn words at a tremendous rate. A new study shows how specific brain regions help them remember those words while they're sleeping.

A new study in older adults shows people who slept too much or too little experienced greater cognitive decline than those who slept a moderate amount.

When COVID-19 lockdowns triggered changes to teens' daily routines, they woke up and slept later, which reduced daytime sleepiness.

A nap won't make up for a sleepless night, according to a new study that judged people's effectiveness on cognitive tasks after various amounts of rest.

People with obstructive sleep apnea have a higher risk of sudden death and also of hypertension, coronary artery disease, and congestive heart failure.

New findings in mice about sleep loss and memory may have implications for human performance and learning strategies, researchers report.

Whether your DNA predisposes you to being an "early bird" or a "night owl" affects how quickly you adapt to "springing forward" for daylight saving time.

Children who learned mindfulness techniques such as deep breathing and yoga slept longer and better, even though the curriculum didn't include sleep tips.

"It creates this vicious cycle where engaging in bedtime media use can result in poor quality sleep, which over time fuels more bedtime media use."