Do you really know? How much sleep should I get each night?
Oct 4, 2025
Sleep consumes a third of our lives, but many struggle to get enough. Discover how insufficient sleep can elevate the risk of cardiovascular and mental health issues. Learn the recommended 7 to 9 hours for optimal health and why individual needs can vary due to genetics. Intriguingly, a study reveals that REM sleep increases in winter, potentially linked to daylight exposure. This concise exploration sheds light on the importance of quality sleep for our immune system and cognitive function.
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Sleep Recharges Mind And Body
- Sleep lets mind and body recharge and supports immune and brain function.
- Regularity and quality of sleep are as important as duration.
Health Risks Of Poor Sleep
- Chronic poor sleep raises risks of heart disease, diabetes, obesity, cancer and accidents.
- It also increases irritability, depression, weight gain, high blood pressure and infection risk.
Too Little Or Too Much Raises Infection Risk
- Short sleep increases cold risk by about 4%.
- Sleeping more than nine hours also raises cold risk, so more sleep isn't always better.