Circadian Rhythms Health Risks Accidents Circadian Health Cardiovascular Risks Daylight Saving Time Heart Attacks Mental Health Sleep Apnea Fatigue Chronic Inflammation Circadian Biology Productivity Sleep Hygiene Circadian Rhythm Sleep Deprivation Sleep Assistance Health Impacts Daylight Saving Time Effects
A study by Osaka Metropolitan University finds that 20 minutes of natural light exposure before waking reduces sleep inertia and improves wakefulness, with potential applications for smart home systems.