Six breaths a minute, for a month
A 2026 review of nine studies on slow breathing before bed: what it changes, and what the devices have not confirmed yet.
Slow your breathing to about six breaths a minute before bed. In a review of nine studies, the programs that ran about a month found people reported sleeping longer and better.
Normal breathing at rest runs around 12 to 20 breaths a minute. Dropping to six does something specific to your nervous system, and it is more than relaxation.
Each slow breath out leans on the vagus nerve, the main line of the calming, parasympathetic side. At about six breaths a minute, your heart rhythm starts rising and falling with your breath, and heart rate variability goes up.
That calmer state is where your body needs to be before deep sleep. People with insomnia often come to bed with the alert side still in charge.
The likely link to your morning is simple. Fall asleep with the brakes already on, and the night has a better chance of running deep and unbroken.
The review, published in Sleep Medicine Reviews in 2026 by researchers at the University of Bergen, gathered nine studies with 457 participants who breathed at 10 breaths a minute or slower before bed. Seven asked people how they slept, and the month-long programs improved self-reported sleep duration and quality.
The studies that recorded sleep with devices were inconclusive. Several of them tested only a single night of breathing.
So the honest read is this. Slow breathing measurably changes heart rate variability, and people who practice it for weeks say they sleep better, but the devices have not confirmed it yet.
Do it for 10 to 20 minutes, and give it a month. The studies that found a benefit ran about four weeks.
Six breaths a minute, for a month. Come to the pillow with the brakes already on.
If you feel lightheaded, breathe a little less deeply. Slow breathing is not a treatment for sleep apnea, so see a doctor if you snore loudly or wake up gasping.
