Coherent Breathing is a technique that involves taking long slow breaths at a rate of about six per minute. It helps to calm the body through its effect on the parasympathetic nervous system and vagal nerve. This technique can calm the mind and bring the body into relaxed coherence.
This video helps you to breathe at a rate of 5:5 for 60 seconds. According to research, practicing this technique 2-3 times per day can help with insomnia, anxiety, depressive symptoms, stress, immune system response, alertness, concentration, vitality, post-traumatic stress disorder, and attention deficit disorder.
Reference – Perciavalle V, Blandini M, Fecarotta P, Buscemi A, Di Corrado D, Bertolo L, et al. The role of deep breathing on stress. Neurol Sci. 2017 Mar;38(3):451–8