Are you struggling to sleep amid the depths and doldrums of winter? You’re not alone. Six in 10 Americans say their sleep routines feel more compromised during the colder months than in other seasons.

There’s a dizzying array of sleep hacks to choose from, and it seems like a new one goes viral almost daily. There’s the sweatshirt trick from TikTok, the drunken monkey pre-bed stretch, and the ...