sleep
Pink noise cost sleepers 19 minutes of REM in a Penn lab
A week of sleep-lab nights with 25 adults found that the steady hiss sold as a sleep aid trimmed dream sleep, and that foam…
Soaak ties its sound app to your smartwatch and publishes no trial
The Tulsa company’s Find My Frequency reads sleep and heart data from five wearable brands to compose a personal track, on the strength of…
Binaural beats, the evidence on one page
A February 2026 review found 10 small trials in people aged 19 to 24, and a 308-person company RCT found the beats worked only…
One night of quiet road noise stiffens blood vessels by morning
In 74 healthy adults sleeping in their own beds, 30 to 60 simulated traffic pass-bys at 41 to 44 dB, below WHO night limits,…