Breathing is the first thing we do by ourselves out of the womb and the last thing we do on this earth, yet we pay little attention to all the breaths we take in between. The average adult takes 12 – 18 breath per minute, that’s about 672,768,000 breaths in a lifetime, if you are healthy enough to reach 80. Controlled breathing exercises stimulate baroreceptors, which relay change of pressure from the cells to the brain. By breathing well, controlled and deep, less pressure is exerted on blood vessel walls, which then decreases heart rate and blood pressure in turn.
The lung tissue expands when you take a deep breath in. Mechanoreceptors, which relay change of stretch or load, within the lung are stimulated with deep breathing. This can decrease heart rate and blood pressure even more.
It can be overwhelming, and counterproductive, to choose a technique from the many breathing techniques out there. Why not start with just sitting back, closing your eyes and taking a deep breath in? Feel how is feels. Now try breathing in to a count of five, and then breathing out to a count of five too. Do 10 rounds like this whenever you need to, or before you lose your temper, through out the day. Easy as that!