11 Wild Sleep Facts That Explain Why You’re Still Tired No Matter What

When it comes to falling asleep, you're doing things all wrong.

Last updated on May 27, 2025

No matter how much person sleeps they are still tired. Alexander Grey | Unsplash
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We know we feel great when we have a good night's sleep, and awful when we don't. But there's a lot we don't know about sleep, from how much we need to how to increase our sleep quality. 

Turns out, there's a great deal to learn about bedtime. Here's what you should know.

Here are 11 wild sleep facts that explain why you’re still tired no matter what:

1. Pain keeps your body from fully resting

"According to a national survey of 200 healthcare professionals (HCPs) commissioned by Advil PM, 98 percent said their patients have expressed that their pain keeps them up at night or prevents them from getting a full night's sleep. And 100 percent of HCPs said that not having a full night's rest can negatively impact a person's job performance," says Dr. Michael Breus, board-certified sleep specialist.

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RELATED: The One Habit Well-Rested People Use To Fall Asleep In Minutes

2. Sleep loss builds on itself over time

woman who is always tired no matter what with sleep deprivation CrizzyStudio / Shutterstock

Anyone can be in danger of not getting enough sleep. There are many reasons for sleep deprivation: Too much work, crazy schedules, tending to children, and so on. With today's busy schedules, people often don't make sleep a priority.

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Dr. Sabrina Magid Katz says what people don't realize is that by trying to gain more hours in a day, they're actually creating less productive and healthy hours. "It is also important to note that even when enough time is set aside for sleep, not everyone may be getting the effective sleep needed. Sleep disorders, such as Sleep Apnea, can cause someone to have 'mini-arousals' in which he or she wakes up multiple times an hour, sometimes every other minute, without knowing it.

This is very exhausting on the body and does not allow the proper cycle of sleep needed for regeneration and repair. Despite having enough time for sleep, a person can be left tired and at risk for health consequences. One must set aside enough hours for sleep every night and make sure that the sleep itself is healthy and productive."

3. A warm room makes it harder to sleep well

"Your room temperature should be around 67 degrees. A cool room allows your core body temperature to drop, which is necessary to fall asleep and stay asleep," says Dr. Robert Oexman, director of the Sleep To Live Institute.

4. Drinking cherry juice before bed can help regulate hormone levels (so you get better sleep)

"Cherries affect your melatonin levels, the body's sleep hormone. Try a glass of tart cherry juice before hitting the sack," says Dr. Oexman. Research also shows that juice helps some insomniacs sleep more deeply.

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RELATED: Sleep Scientist Defends 'Bed Rotting' For Self-Care— 'Just Let The People Rot'

5. Blue light blocks your brain's sleep signals

You've heard it before, and you'll hear it again because it's that important. Your bedroom should be completely dark. No excuses!

"Blue light emitted from TVs, computers, smartphones, and tablets is extremely alerting to the brain and can inhibit the production of melatonin, hurting the natural sleep processes ... your room should be reserved for sleep, intimacy, and nothing else. If your cell phone is your alarm clock, then buy a $5 alarm clock and solve the problem," says Dr. Oexman.

A 2014 study published by the National Academy of Science also found that people who use a tablet at night produce 55 percent less melatonin.

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6. Background noise wakes you up without you realizing it

If you cannot eliminate outside sound, invest in a "white noise" machine. Don't use the other settings, as waterfalls and rainforests may put you to sleep but alterations in the recorded track will eventually wake you back up.

7. Napping the wrong way doesn’t help

Dr. Oexman says that napping can help with the feeling of exhaustion from not getting enough nighttime sleep. It can increase your cognition by promoting the same level of memory improvement as a full night of sleep. It also helps you process your emotions, so you not only think better but also feel better after a nap.

Dr. Oexman recommends that people nap for 30 minutes as often as possible. That amount of time will refresh you without letting you wake up groggy.

RELATED: What Your Go-To Sleeping Position Reveals About Your Personality, According To Research

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8. You can dream in all stages of sleep

You don't only dream in REM sleep  you dream in all stages of sleep. But you're most likely to dream in REM.

9. The "8 hours a night" rule doesn’t fit everyone

man who is always tired trying to get the eight hours of sleep fast-stock / Shutterstock

This is because everyone's sleep needs are individual. One person may require up to 12 hours of sleep, while others can function on less than eight hours, says Breus.

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10. Sleeping in can mess with your internal clock

You cannot catch up on more than about 30 minutes of sleep by sleeping in in the morning, says Dr. Breus. If you do sleep longer, it will affect your circadian rhythm and throw off your schedule.

11. Light sleep leaves you drained

"If you have, for example, too much caffeine or some sort of pain, it will keep you out of the deeper stages of sleep (Stages 3/4 and REM). The real purpose of sleep is physical restoration (Stages 3/4 sleep) and mental restoration (REM sleep)," says Dr. Breus.

RELATED: Harvard Researchers Discovered A 4-Hour Rule That Is More Important For A Good Night’s Sleep Than Getting 8 Hours

Aly Walansky is a NY-based lifestyle writer who focuses on health, wellness, and relationships. Her work appears in dozens of digital and print publications regularly.

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