This article was reviewed by Felix Gussone, MD. "Stiffness" is often considered a sign of male arousal, but it’s not uncommon to experience it even when you’re not turned on. Nocturnal arousal refers ...

Unlike morning breath and bedhead, you might not mind waking up with an arousal. But why do guys get morning arousals? And what do morning arousal say about your health? Despite what you might think, ...

Medicare covers sleep tests when you show clinical signs and symptoms of specific disorders, including sleep apnea, narcolepsy, or parasomnia. Medicare covers different types of sleep studies (Types I ...

Scientists recorded the brain's sleep switch firing in real time - and the feedback loop they uncovered reshapes what we know ...

Sleep comprises one third of our adult life. It is essential for normal functioning; without it, we experience memory lapses, have difficulty with concentration, experience mood alterations, become ...