So you're only going to get 4 hours of sleep before pulling a 12 hour shift? Let's lie awake stressing and worrying about not being able to fall asleep. - Scumbag Brain - quickmeme
Short sleepers' can get just 4 hours a night and feel fine. But is their health at risk?
People who sleep short hours - Business Insider
How I Learned to Sleep Only Three Hours Per Night (and Why You Should Too) | by Cody Monson | Cody Monson
How to Sleep 8 Hours in 4 Hours: Get Less Sleep but Still Feel Rested
Haha I only got 4 hours of sleep last night | Video Meme - AhSeeit
Athlete Sleep Diaries 4: “The Best Lifestyle Change I've Made” | Polar Blog
Mia Minen on Twitter: "Why are some people only able to sleep 4 hours post-call when other colleagues are able to sleep 8 or 9 hours to catch up on sleep? Because
How Sleeping Only 4 Hours Each Night Has Helped Me | ClickUp Blog
I cant say I'm tired unless I only got 4 hours of sleep...apparently : gatekeeping
Can you train yourself to get by on 4-5hrs of sleep? - Quora
Can Your Baby Sleep Too Much? | The Baby Sleep Site
How to get 8 hours worth of sleep in 3 hours or less - Quora
3 Ways to Get Through the Day on Less Than Four Hours of Sleep
How to function on only 4 hours of sleep | 4 hours of sleep, Life lessons, Sleep
Can you survive with 3 hours sleep? | Warrior Forum - The #1 Digital Marketing Forum & Marketplace
The Sleep Habits of the Rich and Famous - Infographic | Sleeping habits, Habits, Millionaire
Is it healthy to only sleep 4 to 5 hours a night? - Quora
This Guy Has Only Slept 4.5 Hours Per Day For Two Years - Business Insider
Slept late: how much sleep is optimal? - Denk Nutrition
YouGov | Four in ten Singaporeans not getting enough sleep
