My friend Clara, a graphic designer in New York, was pulling all-nighters under harsh studio lights for months. Her sleep schedule was so backwards she'd wake up at 3 PM feeling groggy. She downloaded one of those f.lux-style apps that adjusts screen temperature based on time of day. After two weeks, she said her dreams became more vivid and she started waking up without an alarm. It made me realize how much our screens hack into our melatonin production. Maybe tech that gently nudges us towards natural cues could fix our messed-up eating and social rhythms too.