Fake sleep science

September 23, 2025

🛏️ Fake sleep science: Turns out sleep trackers are only 65% accurate at guessing your sleep stages. They’re basically playing a slightly smarter version of “Are You Asleep Yet?” based on your wrist twitches. Helpful? Maybe. Lab-grade reliable? Not even close. Still, 1 in 3 adults say they aren’t getting enough sleep, which explains why we keep buying the devices.