Overview
- Federal health data show about 30.5% of adults sleep under seven hours per night and sizable shares report trouble falling or staying asleep.
- Habitual short sleep, especially under six hours, is linked to higher risks of hypertension, cardiovascular disease, type 2 diabetes, obesity and cognitive decline through disrupted hormone balance, impaired tissue repair and weaker immunity.
- Daytime sleep loss reduces attention and reaction time, which lowers workplace and academic performance and raises the chance of traffic and workplace accidents.
- Sleep-medicine guidance now emphasizes practical fixes: aim for 7–8 hours nightly, keep wake times regular, take brief naps near 26 minutes rather than long sleeps, and limit evening blue light exposure.
- Experts also advise optimizing the bedroom for thermoregulation and ergonomics by keeping it cool and dark, choosing breathable sheets, testing mattresses and using ergonomic pillows to improve comfort and reduce posture-related problems.