This is a very brief description of how the respiration process works (how we breathe) point by point.
Air enters through our mouth and nose. Where it is warmed to your body temperature
Which lead to the nasal cavity and enters the trachea.
The trachea leads to the left and right bronchus.

diagram showing the lobes of the lungs
Each bronchus branches into several bronchioles.
Each bronchiole has alveolar ducts.
Which leads to the alveoli. Balloon looking, which can expand to receive air and contract to release air
Each alveoli has a fine permeable membrane
This is where gaseous exchange takes place as each alveoli has a blood capillary network
It is here where oxygen and carbon dioxide are exchanged. it is also the way oxygen is transported to the heart

diagram of gaseous exchange in the lungs
Deoxygenated blood is oxygenated which your heart pumps oxygen to all parts of your body
Each cell produces the waste matter carbon dioxide
A similar method is used to get rid of carbon dioxide; it is carried back to your heart and your lungs.
This is called deoxygenated blood as it contains more caRbon dioxide it is returned to the lungs where carbon dioxide, is exhaled.
Simultaneously oxygen is inhaled into the lungs providing oxygenated blood.
The cycle begins again.
There is a law of physics that states for gasses to diffuse it has be from a high pressure to a lower pressure. The air we breathe in contains a number of gasses, Nitrogen, Oxygen, Carbon Dioxide, the rest is water vapour, and traces of other gases. We breathe in, and the air enters the alveoli, which are in close contact to the blood supply, that surrounds all the alveoli (see diagram above). The oxygen in the alveoli is at a pressure of 100 mmHg, whereas the oxygen pressure in the deoxygenated blood is at a low pressure of 40 mmHg, the oxygen just breathed in will pass through the alveoli permeable membrane until each side of the membrane is equal. At the same time the carbon dioxide in the blood is at a pressure of 46 mmHg, whereas the carbon dioxide breathed in is at 40 mmHg, hence carbon dioxide can pass from the blood into the alveoli through the permeable membrane and is breathed out. What we breathe out contains less oxygen and more carbon dioxide; the nitrogen element stays the same.
- That is all for the biology lesson!!!
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THE TWO MAIN BREATHING PATTERNS
There are normally two ways of breathing, chest/thoracic, or abdominal/diaphragmatic. If one breathes using the chest, only this will lead to anxiety, or distress in general. It is common for people who do little exercise during the day, have a lot of stress and even tight clothing can hinder ones respiration system. Chest breathing is shallow, irregular, and fast. In other words, one does not have the right amount of oxygen entering the body; this leads to sighing, which provides short-term relief. How to tell, the main symptoms are the chest expands and the shoulders rise. This type of pattern often causes, holding of breath, hyperventilating, shortness of breath, and quite often a person will pass out /faint. On top of this the stress response will be activated hence more anxiety, and more shallow breathing. It is a cycle that can be broken with specific breathing exercises.
The other main way for breathing is abdominal breathing, this is the 'natural' way and newborn babies breath in this manner. However, as they grow and develop if they are living in a stressful house their breathing pattern can alter. On inhaling, the lungs open fully to allow as much oxygen to enter the system. The diaphragm contracts and expands to allow the lungs to expand. This means the body has the right levels of oxygen to provide energy.
What is the point of mentioning this, you may be asking. One can become aware of how they breath which means the more one is in tune with their body the easier it is to know when something is happening. You can shift your breathing to abdominal breathing which will reduce anxiety, tension, hyperventilating, it can even stop your hands and feet feeling cold! It has been found that breathing can reduce anxiety, panic attacks, depression, tension, and muscle tension, irritability even agoraphobia. It is amazing how learning how to breathe in a normal manner can reduce or even stop completely some of stress symptoms. You can get benefits from the very first lesson, which does help boost self-confidence!
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