Free nervous system regulation tools

Breathing timers for when you need to steady yourself, wind down, or settle into a longer practice. Free, in your browser, with nothing to install and no sign-up.

• Timer

  Box breathing timer

  For when you need to steady yourself before something.

  1 to 5 min

• Timer

  4-7-8 breathing timer

  For when you can't switch off at night.

  About 1 min

• Timer

  Coherent breathing

  For when you want a longer, even practice.

  3 to 10 min

• Test

  BOLT score test

  For when you're curious how your breathing is doing.

  About 2 min

• Test

  CO2 tolerance test

  For a breathing check with no breath-hold.

  About 1 min

Use them gently, sitting or lying down. Never in water or while driving. More in breathwork safety and contraindications.