Magic frequency brain hack (doctors HATE this one trick)

A black background with radiating white lines creating a tunnel/zoom effect. White text overlaid claims that an 852 Hz frequency has calming effects on ADHD brains. The image appears to be promotional content for an audio/frequency-based wellness claim. Extracted text: This sound is 852 Hz If you have ADHD, listen for 10 seconds and see how your brain reacts Feel calmer?