What should or shouldn't we eat before a breathing exercise?

Just like breathing, dietary habits also affect the whole body, so it is crucial to pay attention to what we eat before breathing exercises.
First of all, ongoing digestion negatively affects deep breathing exercises. It is not recommended to practise breathwork right after a meal. Also, instead of hard to digest foods such as gluten, heavy grains, dairy products, easily digestible foods such as fresh fruits and vegetables, salads, or soups should be preferred.
Refined sugar significantly harms our physiology. For example, it restricts the brain's oxygen-absorbing capacity and increases the load on the adrenal gland. It is beneficial to prefer natural sugars such as fruit instead of refined sugar. 
It is also recommended to limit caffeine intake to a maximum of one cup in the morning, as it can interfere with the bodily experience during breathing exercises.
It is essential to avoid smoking, alcohol or any other intoxicating substances 4-5 hours before the session. These cause toxic energy and make detoxification difficult, which is perhaps the most important healing aspect of breathwork.
When we turn to breathing exercises, we may feel the need to change our dietary habits. Deep healing and emotional work can lead to different needs. While raw eating may be beneficial for some, others may feel the positive effects of fasting. Breathing is a very personal journey; how the inner process will reflect on the outside always remains a mystery. By watching yourself and listening to your body, you can find what is best for you.