It’s 2:17 AM. The house is silent, the world outside your window is dark, and yet, your mind is anything but still. It’s a whirlwind of replays from the day’s awkward conversations, anxieties about a looming deadline, and a strangely compelling desire to online shop for artisanal olive oil or text an ex from 2017. […]

The 2 A.M. Brain: Why Scientists Say Your Mind Isn’t Meant to Be Awake Past Midnight