Most of us do not breathe consciously. it happens automatically. your breathing pattern represents your personality type, as one of my Guru’s used to say that entire world population can be divided into two categories, one dominant in right nostril and another dominant in the left. To check your breathing nostril, block one and observe your breath, then block the other one and observe again. You’ll find one is easy to breathe from that’s the active nostril at that point. According to Swar yoga, your breathing nostrils alternate every 45 minutes, but its not a perfect cycle and some people breathe more from left or right that’s your dominant nostril.
Your left nostril is associated with the energy of moon, connects with the right brain, which is creative. However moon energy affects your Swadhisthan or Sacral Chakra, which besides our sexuality regulates our emotional balance and water element. Hence the people dominant in their left nostril are sensual, creative but more emotional by nature, they may also be prone to depressions, low blood pressure, lower back discomfort, water retention etc.
Our right nostril is associated with the energy of Sun, so the people who are right nostrils dominant connect with the left brain more, they are action oriented. Sun energy activates their Solar plexus or Manipura chakra. These right nostril dominant people are ambitious in life, they are go getters, chasing success in the form of money, power or authority. And these are prone to heated liver resulting in higher body temperature, imbalanced digestion,acid reflux, high cholestrol, hypertension (high BP), diabetes, frequent headaches and migraines.
Thats why ancient yogic wisdom stresses so much on correct breathing, just by regulating your breath you can regulate a lot of health issues. Simple alternate nostrils breathing done every morning evening can help you regulate your energy level, your sleeping pattern, blood pressure, digestion headache migraines and so many other health issues.