Sleep health

BIOLOGICAL RHYTHMS

Why the Best Time to Drink Coffee Is Before You Wake Up

Why the recent trend of delaying your coffee is not quite right, and how Zest's delayed-release caffeine gets ahead of the curve



Janet Ungless

November 6, 2024

· 5 min read



BIOLOGICAL RHYTHMS

Why the Best Time to Drink Coffee Is Before You Wake Up

Why the recent trend of delaying your coffee is not quite right, and how Zest's delayed-release caffeine gets ahead of the curve



Janet Ungless

November 6, 2024

· 5 min read



SLEEP HEALTH

Why Do We Have Daylight Saving (*not Savings) Time?

7 in 10 Americans hate resetting their clocks twice a year. So how did this unpopular tradition come about?



Janet Ungless

November 6, 2024

· 3 min read



SLEEP HEALTH

Why Do We Have Daylight Saving (*not Savings) Time?

7 in 10 Americans hate resetting their clocks twice a year. So how did this unpopular tradition come about?



Janet Ungless

November 6, 2024

· 3 min read



SLEEP HEALTH

How does Alcohol Impact Your Sleep?

Alcohol has a sedative effect that someone might mistake as relaxing or helpful with sleep, but from a physiological perspective that is not the case.



Jenna Gress Smith, PhD

November 6, 2024

· 4 min read



SLEEP HEALTH

How does Alcohol Impact Your Sleep?

Alcohol has a sedative effect that someone might mistake as relaxing or helpful with sleep, but from a physiological perspective that is not the case.



Jenna Gress Smith, PhD

November 6, 2024

· 4 min read



SLEEP HEALTH

Adenosine: the link between sleep, exercise and caffeine

Have you ever wondered what makes you feel sleepy or alert throughout the day? The answer lies in a molecule called adenosine.



The Zest Team

November 5, 2024

· 2 min read



SLEEP HEALTH

Adenosine: the link between sleep, exercise and caffeine

Have you ever wondered what makes you feel sleepy or alert throughout the day? The answer lies in a molecule called adenosine.



The Zest Team

November 5, 2024

· 2 min read



NUTRITION

Why Over-The-Counter Sleeping Pills are harmful for your sleep

A deeper look at OTC sleeping pills and how they affect our sleep and sleep quality.



The Zest Team

November 5, 2024

· 3 min read



NUTRITION

Why Over-The-Counter Sleeping Pills are harmful for your sleep

A deeper look at OTC sleeping pills and how they affect our sleep and sleep quality.



The Zest Team

November 5, 2024

· 3 min read



COGNITIVE PERFORMANCE

Fact or Myth: Hitting Snooze Provides a Few Extra Minutes of Meaningful Sleep

The inventor of the snooze button did not have your best sleep interests in mind.



Janet Ungless

November 5, 2024

· 2 min read



COGNITIVE PERFORMANCE

Fact or Myth: Hitting Snooze Provides a Few Extra Minutes of Meaningful Sleep

The inventor of the snooze button did not have your best sleep interests in mind.



Janet Ungless

November 5, 2024

· 2 min read



PHYSICAL PERFORMANCE

Want to sleep better? Lift some weights.

Results of a new study show that resistance exercise promotes better sleep among inactive adults, especially those who are poor sleepers.



Janet Ungless

November 5, 2024

· 3 min read



PHYSICAL PERFORMANCE

Want to sleep better? Lift some weights.

Results of a new study show that resistance exercise promotes better sleep among inactive adults, especially those who are poor sleepers.



Janet Ungless

November 5, 2024

· 3 min read



SLEEP HEALTH

Cold or Hot Shower Before Bed: Which Is Better for Sleep?

A shower or bath in the evening is a great way to wash away the day and wind down before bed. Should you go hot or cold for your deepest sleep?



Janet Ungless

November 5, 2024

· 5 min read



SLEEP HEALTH

Cold or Hot Shower Before Bed: Which Is Better for Sleep?

A shower or bath in the evening is a great way to wash away the day and wind down before bed. Should you go hot or cold for your deepest sleep?



Janet Ungless

November 5, 2024

· 5 min read



SLEEP HEALTH

Does Tryptophan in Turkey Really Make You Sleepy?

Why does turkey make you sleepy? You've finished your Thanksgiving meal and now you're ready for a nice nap. Is the bird to blame?



Janet Ungless

November 5, 2024

· 3 min read



SLEEP HEALTH

Does Tryptophan in Turkey Really Make You Sleepy?

Why does turkey make you sleepy? You've finished your Thanksgiving meal and now you're ready for a nice nap. Is the bird to blame?



Janet Ungless

November 5, 2024

· 3 min read



SLEEP HEALTH

What's Your True Chronotype?

Our modern, plugged-in lifestyle has kind of messed with our chronotypes. Here's why you may need a reset.



Janet Ungless

November 5, 2024

· 7 min read



SLEEP HEALTH

What's Your True Chronotype?

Our modern, plugged-in lifestyle has kind of messed with our chronotypes. Here's why you may need a reset.



Janet Ungless

November 5, 2024

· 7 min read



SLEEP HEALTH

Does Vitamin D Help With Sleep?

The "sunshine vitamin" has a hand in regulating many of our bodies' biological functions. One of those may even happen after dark.



Janet Ungless

November 5, 2024

· 5 min read



SLEEP HEALTH

Does Vitamin D Help With Sleep?

The "sunshine vitamin" has a hand in regulating many of our bodies' biological functions. One of those may even happen after dark.



Janet Ungless

November 5, 2024

· 5 min read



SLEEP HEALTH

11 Reasons You're Tired All the Time*

*That aren't because you're sleep deprived. Here's what you need to know.



Janet Ungless

November 5, 2024

· 9 min read



SLEEP HEALTH

11 Reasons You're Tired All the Time*

*That aren't because you're sleep deprived. Here's what you need to know.



Janet Ungless

November 5, 2024

· 9 min read



SLEEP HEALTH

Why Your Wake Time Matters More Than Your Bedtime for Improving Sleep

Sticking to a regular morning wake-up time is one of the best things you can do to improve your sleep tonight. (And the next night, too.)



Jenna Gress Smith, PhD

November 5, 2024

· 3 min read



SLEEP HEALTH

Why Your Wake Time Matters More Than Your Bedtime for Improving Sleep

Sticking to a regular morning wake-up time is one of the best things you can do to improve your sleep tonight. (And the next night, too.)



Jenna Gress Smith, PhD

November 5, 2024

· 3 min read



SLEEP HEALTH

Is Dehydration Ruining Your Sleep?

Does dehydration affect sleep? What causes dehydration at night? Here's what the research says about being even mildly dehydrated when you crawl into bed. (Spoiler alert: It can affect your natural circadian rhythm and cause sleep disruptions.)



Janet Ungless

November 5, 2024

· 5 min read



SLEEP HEALTH

Is Dehydration Ruining Your Sleep?

Does dehydration affect sleep? What causes dehydration at night? Here's what the research says about being even mildly dehydrated when you crawl into bed. (Spoiler alert: It can affect your natural circadian rhythm and cause sleep disruptions.)



Janet Ungless

November 5, 2024

· 5 min read



SLEEP HEALTH

What is sleep apnea, what are the symptoms, and how to take action

Sleep apnea is a sleep disorder in which breathing repeatedly stops and starts. What are the symptoms and risks of sleep apnea? How do you treat and manage sleep apnea?



Jenna Gress Smith, PhD

November 5, 2024

· 3 min read



SLEEP HEALTH

What is sleep apnea, what are the symptoms, and how to take action

Sleep apnea is a sleep disorder in which breathing repeatedly stops and starts. What are the symptoms and risks of sleep apnea? How do you treat and manage sleep apnea?



Jenna Gress Smith, PhD

November 5, 2024

· 3 min read



SLEEP HEALTH

The Stages of Sleep: What Happens During Each

Most people have heard of REM or NREM sleep. Fewer know how each stage of sleep contributes to well being, or how sleep stages work together. In this guide, you'll learn about the stages of sleep, and how they contribute to the recovery of your brain and body.



Azure Grant, PhD

September 2, 2022

· 7 min read



SLEEP HEALTH

The Stages of Sleep: What Happens During Each

Most people have heard of REM or NREM sleep. Fewer know how each stage of sleep contributes to well being, or how sleep stages work together. In this guide, you'll learn about the stages of sleep, and how they contribute to the recovery of your brain and body.



Azure Grant, PhD

September 2, 2022

· 7 min read



SLEEP HEALTH

Sleep and Oral Health

Brushing your teeth may be part of your nighttime routine, but are there more connections between sleep and oral health?



Jenna Gress Smith, PhD

June 6, 2022

· 3 min read



SLEEP HEALTH

Sleep and Oral Health

Brushing your teeth may be part of your nighttime routine, but are there more connections between sleep and oral health?



Jenna Gress Smith, PhD

June 6, 2022

· 3 min read



BIOLOGICAL RHYTHMS

The Most Relaxing Song in the World According to Neuroscience

According to researchers, this song can reduce anxiety by 65% and help you fall asleep. So you might want to add it to your bedtime playlist.



Janet Ungless

April 14, 2022

· 2 min read



BIOLOGICAL RHYTHMS

The Most Relaxing Song in the World According to Neuroscience

According to researchers, this song can reduce anxiety by 65% and help you fall asleep. So you might want to add it to your bedtime playlist.



Janet Ungless

April 14, 2022

· 2 min read



NUTRITION

Does Salt Help or Hurt My Health and Sleep?

Salt is growing as a focus of health and body regulation. But does it have any impact on sleep? Let's find out...



Jenna Gress Smith, PhD

March 31, 2022

· 3 min read



NUTRITION

Does Salt Help or Hurt My Health and Sleep?

Salt is growing as a focus of health and body regulation. But does it have any impact on sleep? Let's find out...



Jenna Gress Smith, PhD

March 31, 2022

· 3 min read



SLEEP HEALTH

It’s Time to Ditch Sleep Hygiene and Get on Board with Sleep Health

Sleep hygiene is not effective and science has so much more to offer. Here's how sleep health can help move us forward.



Jenna Gress Smith, PhD

March 23, 2022

· 5 min read



SLEEP HEALTH

It’s Time to Ditch Sleep Hygiene and Get on Board with Sleep Health

Sleep hygiene is not effective and science has so much more to offer. Here's how sleep health can help move us forward.



Jenna Gress Smith, PhD

March 23, 2022

· 5 min read



SLEEP HEALTH

What Is Revenge Bedtime Procrastination?

It means putting off sleep for pleasurable activities you can’t squeeze in during your busy day. Does that sound like something you do?



Janet Ungless

February 22, 2022

· 3 min read



SLEEP HEALTH

What Is Revenge Bedtime Procrastination?

It means putting off sleep for pleasurable activities you can’t squeeze in during your busy day. Does that sound like something you do?



Janet Ungless

February 22, 2022

· 3 min read



NEWS

Introducing Crescent Health, and our new mobile app experience

Bioloop is rebranding to Crescent. Welcome to the new horizon for health.



The Zest Team

February 15, 2022

· 4 min read



NEWS

Introducing Crescent Health, and our new mobile app experience

Bioloop is rebranding to Crescent. Welcome to the new horizon for health.



The Zest Team

February 15, 2022

· 4 min read



SLEEP HEALTH

Words to Sleep By

Recent studies have shown that positive words played during sleep can give us deeper & more refreshing sleep. Here we examine those findings and see how we can apply it to our sleep routines.



Jenna Gress Smith, PhD

February 15, 2022

· 2 min read



SLEEP HEALTH

Words to Sleep By

Recent studies have shown that positive words played during sleep can give us deeper & more refreshing sleep. Here we examine those findings and see how we can apply it to our sleep routines.



Jenna Gress Smith, PhD

February 15, 2022

· 2 min read



SLEEP HEALTH

Getting Down to Sleep and Sex

One of sleep hygiene's best practices is to only use your bed for sleep and sex. As it turns out, getting more of one will get you more of the other.



The Zest Team

February 14, 2022

· 2 min read



SLEEP HEALTH

Getting Down to Sleep and Sex

One of sleep hygiene's best practices is to only use your bed for sleep and sex. As it turns out, getting more of one will get you more of the other.



The Zest Team

February 14, 2022

· 2 min read



COGNITIVE PERFORMANCE

How Good Sleep Makes You More Resilient

Resilience is key to rebounding from life's setbacks and coping well with challenges. Here's how sleep helps strengthen your resilience muscle.



Janet Ungless

February 8, 2022

· 5 min read



COGNITIVE PERFORMANCE

How Good Sleep Makes You More Resilient

Resilience is key to rebounding from life's setbacks and coping well with challenges. Here's how sleep helps strengthen your resilience muscle.



Janet Ungless

February 8, 2022

· 5 min read



SLEEP 101

What Is REM Sleep and Why Is It Important?

You may know that REM is the sleep stage when your most vivid, weird, and occasionally scary dreams occur. You should also know that it's essential for memory consolidation, mental focus, and emotional regulation.



Janet Ungless

January 24, 2022

· 5 min read



SLEEP 101

What Is REM Sleep and Why Is It Important?

You may know that REM is the sleep stage when your most vivid, weird, and occasionally scary dreams occur. You should also know that it's essential for memory consolidation, mental focus, and emotional regulation.



Janet Ungless

January 24, 2022

· 5 min read



SLEEP HEALTH

Why This Should Be Your Only New Year’s Resolution for 2022

Sleep is a crucial part of our health and wellbeing, but rarely makes an appearance on our New Year's resolutions list. We may want to reconsider that.



Jenna Gress Smith, PhD

December 31, 2021

· 5 min read



SLEEP HEALTH

Why This Should Be Your Only New Year’s Resolution for 2022

Sleep is a crucial part of our health and wellbeing, but rarely makes an appearance on our New Year's resolutions list. We may want to reconsider that.



Jenna Gress Smith, PhD

December 31, 2021

· 5 min read



SLEEP HEALTH

Do Weighted Blankets Work?

We weigh the evidence. What the science shows, how and why do weighted blankets work?



Janet Ungless

December 23, 2021

· 4 min read



SLEEP HEALTH

Do Weighted Blankets Work?

We weigh the evidence. What the science shows, how and why do weighted blankets work?



Janet Ungless

December 23, 2021

· 4 min read



SLEEP HEALTH

Fact or Myth: Remembering your dreams is a sign of good-quality sleep

Dreams are one of the more intriguing aspects of sleep. So why do some people remember their dreams and others don't?



Janet Ungless

December 13, 2021

· 3 min read



SLEEP HEALTH

Fact or Myth: Remembering your dreams is a sign of good-quality sleep

Dreams are one of the more intriguing aspects of sleep. So why do some people remember their dreams and others don't?



Janet Ungless

December 13, 2021

· 3 min read



SLEEP HEALTH

Fact or Myth: Falling asleep instantly means you’re a good sleeper

Is falling asleep instantly good or bad? Many people think it's great, even blissful, but we want to put this myth to bed.



Janet Ungless

December 6, 2021

· 2 min read



SLEEP HEALTH

Fact or Myth: Falling asleep instantly means you’re a good sleeper

Is falling asleep instantly good or bad? Many people think it's great, even blissful, but we want to put this myth to bed.



Janet Ungless

December 6, 2021

· 2 min read



SLEEP HEALTH

CBT-I: What is it and How does it work?

Cognitive Behavioral Therapy for Insomnia (CBT-I) is the most effective treatment for insomnia. We'll tell you what it is and how it works.



The Zest Team

November 23, 2021

· 6 min read



SLEEP HEALTH

CBT-I: What is it and How does it work?

Cognitive Behavioral Therapy for Insomnia (CBT-I) is the most effective treatment for insomnia. We'll tell you what it is and how it works.



The Zest Team

November 23, 2021

· 6 min read



SLEEP HEALTH

Sleep, The Immune System, and COVID-19 Vaccines

Studies have shown poor sleep can impact antibody production, which help vaccines do their job. Now that COVID-19 booster shots and options for different age groups are here, researchers are racing to find out how sleep and the COVID-19 vaccines interact.



Jenna Gress Smith, PhD

November 11, 2021

· 4 min read



SLEEP HEALTH

Sleep, The Immune System, and COVID-19 Vaccines

Studies have shown poor sleep can impact antibody production, which help vaccines do their job. Now that COVID-19 booster shots and options for different age groups are here, researchers are racing to find out how sleep and the COVID-19 vaccines interact.



Jenna Gress Smith, PhD

November 11, 2021

· 4 min read

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