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 ...

Fact-check: Do power naps boost productivity or disrupt sleep? Experts explain ideal nap duration, timing, benefits, and when ...

How sleeping in 90 minute blocks has helped me get rid of morning grogginess.

Ah, sleep. It sounds so simple, doesn’t it? You put your tot to bed, he closes his eyes, soaks up hours of refreshing rest, and wakes with a smile on his face at 7am… But the reality for most of us, ...

Research demonstrates a clear relationship between better sleep quantity and quality and improved mood 1. Due to its importance, seven to nine hours of quality sleep are recommended for adults each ...

It can be tough to calculate exactly how long you’re in REM, but many health trackers use your heart rate, heart rate variability, and data on your movements to make solid estimations. (Just know that ...

Brief awakenings are a normal part of sleep, but stress, alcohol, caffeine and irregular routines can make them harder to recover from.