The "4-7-8" technique involves controlling your breath for a brief time to encourage falling to sleep faster.
Each number consists of the period of seconds you spend during a certain part of breathing (4 for breathing through nose, 7 for holding breath and 8 for exhaling through mouth).
She explained that the studied combination of numbers has a chemical-like effect on our brains and would slow my heart rate and soothe me right to sleep that night. “It works,” she told me. “It’s crazy.”
I could not find any decisive evidence for its effectiveness or lack thereof.
Has there been any significant research about this technique?