Lying in bed, tired but not sleepy, watching the clock move from 1:13 to 1:47 to 2:22… that slow, wired misery is something almost everyone has felt at some point. If your brain refuses to “switch off” at night, you’re exactly the kind of person who might be curious about 512 Hz frequency benefits. 512 Hz isn’t as famous as 432 Hz or 528 Hz in sound-healing circles, but many people quietly use it as a night-time tone for calming the mind, easing sleep anxiety and building a predictable bedtime ritual their nervous system can trust. In this guide, we’ll…