Which session should I use — 10Hz, 40Hz or Sleep?

Racing thoughts, can't switch off — 10 Hz. Lights out, ready for bed — Sleep, on a speaker. Can't start the task — 40 Hz. Long stretch of work — 40 Hz, and loop it. New here? Start with 10 Hz. Most people feel the reset before they feel the focus.

The Sessions · Free

Free sessions for calm, focus and sleep

Three sessions. Pick the one your nervous system needs right now.

Portrait of an astronaut with her eyes closed

Alpha · Calm 10 Hz For racing thoughts and nights that will not settle. 11:00 · Eyes closed · Headphones Start the Reset →

Portrait of an astronaut with her eyes open

Gamma · Focus 40 Hz For the task you keep not starting. 11:00 · Eyes open · Loop available Start the Focus →

Close-up portrait of an astronaut, eyes closed, at rest

Delta · Sleep Sleep For lights out. Fades to silence on its own. 30:00 · Speaker · No headphones Start Sleep →

Which one?

What you are feeling	The session
Racing thoughts, can't switch off	10 Hz
Too wired to lie down yet	10 Hz
Lights out, ready for bed	Sleep
Can't start the task	40 Hz
Long stretch of work	40 Hz (loop it)

New here? Start with 10 Hz. Most people feel the reset before they feel the focus.

Longer versions on YouTube Brown Noise for Sleep, 10 hours Deep Focus 40Hz, 2 hours Brown Noise + Pomodoro 50/10, 3 hours Calm Music, 432 Hz, 1 hour

10 Hz and 40 Hz are binaural beats and need stereo headphones. Sleep is not — it plays on a speaker, so nothing has to stay in your ears overnight. These sessions are self-care tools, not medical treatments. Each page explains what the research does — and does not — show, and carries a full disclaimer.