You don't need a machine to stimulate your vagus-nerve: Meditation, Massage, Exercise, Music and Cold-Water immersion can do that, too: https://health.clevelan

You don't need a machine to stimulate your vagus-nerve: Meditation, Massage, Exercise, Music and Cold-Water immersion can do that, too: https://health.clevelandclinic.org/vagus-nerve-stimulation/ https://health.clevelandclinic.org/vagus-nerve-stimulation/