Trouble sleeping in a new place? You’re not alone—it’s called the first-night effect

The first night in a new place is always the same for Robinson Leoni: He takes longer to fall asleep, wakes up more often during the night and gets less sleep overall.At home he averages seven hours. The first night away — with or without earplugs and regardless of the bed’s quality — his smartwatch tells him he gets about five.“I feel normal, you know, no stress, nothing, but it’s just I notice I wake up continuously,” said Leoni, a sales director for a tech company who...