NIH NHLBI on Twitter: "@TheHeartTruth The recommended amount of sleep per night varies by age group. See the table below for recommendations to keep #OurHearts healthy. https://t.co/8912ry7dad #SaludTues https://t.co/4IRd4etRTO" / Twitter
Dr. Joseph Mercola - How much sleep is "enough?" | Facebook
Sleep Calculator: How Much Sleep You Need | Sleep.com
Sleep Calculator - Start School Later
How Do Your Sleep Habits Stack Up? - Fitbit Blog
In U.S., 40% Get Less Than Recommended Amount of Sleep
How much sleep do you really need? | New Scientist
5 sleep myths: How much sleep do we need?
Big workloads prompt big questions about students' sleeping habits - The Tartan
Hours of Sleep per night
How much sleep do you really need? (S1) | The Power of Good Health - YouTube
Is 5 Hours Enough Sleep? How Much Sleep Should I Get?
Teens: 7 Essential Tips to get 8-9 Hours of Sleep and Decrease Injury Risk — Chris G. Koutures, MD, FAAP Pediatric and sports medicine specialist
How Much Sleep Does My Child Need? - The Sleep Charity
How Many Hours of Sleep Do You Need? | Sleep Times Based on Age – Cool-jams
Is it a myth that we need 8 hours sleep? - Sleep Matters
How Many Hours of Sleep Do You Really Need?
How many hours do most women sleep? - Quora
In U.S., 40% Get Less Than Recommended Amount of Sleep
Poor Sleep — National Sleep Diagnostics
Sleep & performance: The benefits of getting 7–9 hours of sleep per night | HPRC
neurology - Can anyone function on just 2 hours sleep per night? - Skeptics Stack Exchange
Slept late: how much sleep is optimal? - Denk Nutrition
Sleep Study | Guides
Seop_Choi on Twitter: "This bar chart shows how many hors the American college students sleep per night average during the school year. Most students tend to sleep around 6-7 hours per night. #
