wewhat we do
1150+
sleep and mattress sources researched
12.7+ mil
people visited
169
products reviewed
169
products reviewed
1150+
sleep and mattress sources researched
12.7+ mil
people visited
At Sleep Advisor, we believe a quality life starts with great sleep. The days of bragging about how few zzz’s you get are over. Self-care is more than a popular buzzword, and rest is a key ingredient. Sleep affects both your mental and physical well-being, and everyone deserves to feel their best, which is why we’re passionate about helping you dream with ease.
Meet Our Team
Jill Zwarensteyn
Editor
Jill Zwarensteyn is the editor for Sleep Advisor and a certified sleep science coach.
She is enthusiastic about providing helpful and engaging information on all things sleep and wellness.
Based in Los Angeles, Jill is an experienced writer and journalist who enjoys spending her free time at the beach, hiking, reading, or exploring new places around town.
She’s also an avid traveler who has a personal goal of being able to successfully sleep on an airplane someday.
Vanessa Osorio
Sleep Health Content Specialist
Vanessa leads Sleep Advisor’s sleep health content. She collaborates with the editorial team, researching sleep health topics and creating new content on sleep hygiene and sleep science.
Vanessa has prioritized sleep from a very young age and is passionate about sleep health. She loves to explain that sleep hygiene is not about cleaning your mattress or changing your bedsheets… She is a combination sleeper and has learned the magic of not hitting the snooze button on her alarm in the mornings.
Based in Hoboken, Vanessa enjoys long walks with coffee and friends, bringing her dog to the dog park, and taking in views of New York City.
Katie Simpson
Editor
Katie Simpson is an editor for Sleep Advisor. She brings her experience in the wellness space, specifically in testing products and writing honest reviews, to the Sleep Advisor site where she provides helpful information on mattresses, sleep accessories, sleep health, and more.
As a former insomniac and dedicated back sleeper, Katie loves sharing her newfound appreciation for sleep with others. She’s also an advocate for cranking the thermostat down at night — setting the temperature above 68 at night should be a crime.
Outside of work, her passion for living a healthy lifestyle continues in the gym, where you can find her lifting weights and doing yoga.
Danica Moravcevic
Developer
Danica ensures all our content is presented beautifully on our website. As a part of the team for four years, she’s never stopped showing her passion for coding. Studying wellness through her role has helped improve her sleep, as she now enjoys drifting off to sleep on a perfect mattress topper, supportive pillows, and tucked under a fluffy duvet, which allows her to wake up refreshed.
When she’s not coding, she likes to take long walks with her dog, play adventure PS games and read psychological books.
Dragan Zavisa
Marketing Associate
Dragan is in charge of enhancing our website so that it’s easily accessible to our readers.
Dragan very much respects his body; however, under no circumstance is he willing to allow his mattress to adjust to his well-shaped figure for the necessary 8 hours of sleep, which his mind desperately craves— he’s an extra-firm mattress kinda guy.
Legend has it, he once slept on a rock, and he didn’t even mind as long as he could get some sleep. In his spare time, he likes playing drums, watching independent European cinema, reading French comics, and frequenting music festivals— where he might have another chance to find a rock to lay his head on and drift peacefully into dreamland.
Olivera Jancikin
Content Writer
Olivera is a content writer for Sleep Advisor and a certified sleep science coach. Olivera is enthusiastic about sleep, and she firmly believes in the benefits of daytime naps on top of getting a full 8-hour sleep at night.
She started writing in 2016 and never looked back. What she appreciates the most is her flexible working hours and the ability to work with people worldwide.
In her free time, Olivera enjoys reading Spanish literature, taking pilates classes, and trying out new cocktails with friends.
Sosha Lewis
Staff Writer
Sosha Lewis is a staff writer for Sleep Advisor and a certified sleep science coach. Lewis is happy that she is able to combine her love of sleep with her love of writing. Lewis also has had articles featured in The Washington Post, Huffington Post, MUTHA Magazine, Charlotte Magazine, and The Charlotte Observer. Her weekly column, Soshally Awkward, is featured on the nationally-syndicated radio show, Bob & Sheri.
She lives in Charlotte, NC with her husband, daughter, and lovable trash-panda of a dog, Olive.
Our Core Values
We believe diversity is critical to growth and that talent resides worldwide, as our company currently spans six different time zones. We love working with an international team, and as we challenge each other to be our best, these values are what we keep at our core.
Check Your Ego
We take a progressive approach, and there is no traditional hierarchy. Suggestions for improvement flow up as often as they run down because everyone’s voice is equally valued.
Stay Honest
Challenging the way things are done or pointing out something wrong is hard, but it’s crucial to speak up, or we end up resting on our laurels. The truth can be brutal, but pushing through is where growth begins.
Be Curious
The sleep industry changes constantly. If we aren’t consistently gathering the latest data or challenging our sources, our information can quickly become obsolete. Further, we value education, and whether that’s attending a sleep course or participating in our team book club, it’s critical to keep learning.
Ask Questions
There are no silly questions— you can’t satisfy curiosity without a query.
If you don’t know, ask, we’re all ears.
Our Policies
We are committed to being upfront and transparent about our policies. More information about how we evaluate products and run our site can be found here, along with our disclosures and disclaimers.
It’s critical to keep in mind that while we do extensive research and testing, we are not doctors, and no advice we offer could take the place of a medical professional. We hope you’ll use our findings as a platform for your own research and questions you might ask at your next doctor visit.
Contact Us
Have a question? Comment? Want to work for us?
Send us an email. We’d love to hear from you!
