Evening Chronotype Raises Anxiety Risk Through Melatonin Delay

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Evening types had 1.8 times higher odds of anxiety in a study of 187 adults, linked to melatonin onset delayed by 2.4 hours on average.

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Online Therapy Eases Insomnia in Bipolar Patients

Digital CBT-I reduced insomnia severity by 8.2 points in bipolar adults without triggering mania episodes in new trial.

Consistent Sleep Timing Boosts Power Output in Recreational Athletes

Recreational athletes keeping bedtimes within a 60-minute window produced 4-7% higher peak power during tests, regardless of total sleep duration.

One Night of Short Sleep Cuts Strength Gains in Trained Adults

Four hours of sleep reduced bench press strength by 8.1 percent and squat strength by 9.9 percent the next day in resistance-trained men.

Seven Hours of Sleep Tied to Lowest Multimorbidity Risk

UK study of 300000 adults shows seven hours of sleep each night links to lowest risk of multiple chronic diseases developing together.

Midday Naps Improve Reaction Speed and Problem Solving for Office

A 26-minute nap between 1 and 3 p.m. improved reaction times by 15 percent and sped problem-solving by 10 percent among office workers.

Sleep Efficiency Improves Executive Function in Middle-Aged Adults

Sleep efficiency predicted 12 percent better scores on mental flexibility tasks in middle-aged adults tracked by actigraphy in the CARDIA study.

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Explore our latest tips and stories to help you and your loved ones sleep better.

August 10, 2026

Post-Learning Sleep Boosts Motor Memory Retention by 20 Percent

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A study of 60 adults found that sleeping within 12 hours of motor skill practice improves performance gains by 20 percent over delayed sleep.

August 9, 2026

Severe Sleep Apnea Raises Heart Event Risk in Women

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Women with severe obstructive sleep apnea had 2.3 times higher odds of major cardiovascular events than women without the condition.

August 8, 2026

Less REM Sleep Links to Faster Brain Shrinkage With Age

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A 2024 study of 294 older adults found each 1% reduction in REM sleep percentage tied to 0.8% greater annual volume loss in memory regions, measured by polysomnography and MRI over 2-3 years.

August 8, 2026

Irregular Sleep Timing Slows Weight Loss Progress in Adults

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New research reveals that adults with inconsistent sleep schedules lose 30% less weight during structured weight loss programs, even when getting adequate sleep duration. The study of 172 adults found that sleep timing variability—not just how much sleep you get—directly impacts weight management success.