How we sleep affects how we look, and how attractive others find us

New research suggests the way we sleep affects not only how we feel but how we look, and how attractive others judge us to be.

Participants in sleep studies were rated as less healthy and less approachable after periods of restricted sleep, with observers picking up on cues the sleepers themselves often did not notice.

Researchers say the effect is a reminder that sleep is a physiological process with visible consequences, not simply downtime.

The practical advice remains unglamorous: consistent timing, a dark and cool room, and limiting late-evening screens and caffeine.