Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

You wake up to your partner telling you that you had an entire conversation with someone named Bob last night, or your roommate mentions you were giving what sounded like a presentation in your sleep.

Many of us have no idea we talk in our sleep—until someone else has to listen. The mustard battle starts at quarter after. Do we have everybody lined up for it?” “We’re playing food roulette, food ...

Sleep talking: You must have heard someone mumbling, laughing, or even having a full conversation while asleep. It might sound strange, but this common phenomenon is known as sleep talking, or ...

Sleep talking might be tied to how the brain processes emotions and sleep rhythm Stress, fatigue, fever, certain medications, and even mental health conditions can increase the likelihood of sleep ...

Sleep talking, or somniloquy, often dismissed as harmless, can signal underlying issues like stress, sleep deprivation, or disrupted sleep cycles. While occasional mumbling is usually benign, frequent ...

Young people who go to bed earlier and sleep for longer than their peers tend to have better brain function and perform better at cognitive tests, according to researchers from the UK and China. A ...