Deposits and tidal effects
When we inhale it activates the sympathetic nervous system, which accounts for activity and constrict the capillaries. At the same time the left hemisphere is also activated, where the clarity, logic and the ability to analytically thinking belongs. It is the sympathetic system, which creates catecholamines, or energy, and that keeps us going. When we are under too much stress however an over-activation happens, and that is not good either. Therefore we need to keep the activity just right.
On expiration the parasympathetic nervous system is activated, which accounts for relaxation and
dilates the capillaries. Right brain is activated, which controls our concentration and our creativity.
Right brain gives us access to the subconscious which you can use in your breathing exercises. If you hold your breath after a long in-breath you do stay on the sympathetic nervous systems dominance. You will be alert and active and get new energy. If you are depressed and have low energy and a lot of acetylcholine and cortisol in the blood, you should breathe in and make a long pause after inhalation.
However, if you need to calm down, you should hold your breath after breathing out, because you have an activated parasympathetic nervous system. A long exhalation also work reassuring.
For insomnia, and if your heart rate is higher than usual, it’s the sympathetic system that dominates. Take a few breaths, holding your breath after exhalation. Within five minutes you will be balanced
in the sympathetic and the parasympathetic nervous system.
This is the principle itself, which can then be varied by different combinations, times etc. How to
post your breathing exercises depends on what you want to accomplish. The most important but also most difficult task for those who want to restore their health is to influence themselves with the power of thought. For that they need to contact their subconscious. There are various techniques to open the door to the subconscious. Breathing is one of them, and the exhalation is the key. Breathe in, breathe out and hold your breath. Long exhalation, and long pause. This will keep you in the parasympathetic nervous system, and get in touch with your intuition and creativity.