Our brains are much more active when we daydream than previously thought. Activity in numerous brain regions increases when our minds wander, according to new research. Psychologists found that brain ...

Sleep happens in cycles that include three non-rapid eye movement (NREM) stages and one rapid eye movement (REM) stage, repeated 4 to 5 times nightly. Each cycle typically lasts 90 to 110 minutes. The ...

Research on apple cider vinegar for weight loss is limited and inconsistent, with one small 2018 trial showing modest benefits that haven’t been replicated. Evidence that apple cider vinegar ...