Let's say you fell asleep last night at 11pm and woke at 7am, getting 8 hours of what seems like good rest. So, why are you still tired in the morning? It's probably because you aren't getting ...

Caroline Igo (she/her/hers) was a wellness editor at CNET and holds Sleep Science Coach and Stress Management certificates from the Spencer Institute. She received her bachelor's degree in creative ...

Considering sleep is so important to so many facets of our health, it should be worrying that more than a third of us aren't getting enough every night – and it's something I haven't prioritized ...

Thanks to the Internet, it's the age of self-diagnosis. People like to learn about (and treat) themselves through technology. As a sleep researcher, I was interested in my friends' use of ...

The sleep cycle has three NREM stages and one REM stage. Deep sleep occurs in stage 3 and is crucial for feeling refreshed. REM sleep helps in processing and storing memories. As we sleep, our brain ...

Ever wonder why some mornings you wake up ready to go, and others you feel like a zombie? The difference often comes down to when you wake up during your sleep cycle, and that’s exactly what a sleep ...

The internet claims waking at the end of a sleep cycle will leave you refreshed, but experts aren’t convinced. By Clarissa Brincat Published Sep 9, 2025 9:00 AM EDT Get the Popular Science daily ...