In addition, muscles are contracted and relaxed through action potentials. Action potentials are electrical potential variations of a few milliseconds duration that are recorded from nerve and muscle cells during activity. In the nerves, the potential variations represent the nerve impulse itself. The action potentials are a transient and progressive change in the cell's membrane potential, and the variations follow the tension between the inside of the cell and the surrounding tissue fluid. The action potential is formed with the help of ions.
The most important diffusible ions are K+ (potassium) and Cl− (chlorine), while the permeability of Na+ (sodium), which is present in high concentration on the outside, is only a fraction of the permeability of K+. During the potential change, a reversal of the membrane potential occurs so that the inside of the cell is more positive than the outside for a few milliseconds. The reason is that the membrane temporarily becomes more permeable to Na+ than to K+. For each action potential, a small amount of Na+ is exchanged for K+ across the membrane. The membrane is then repolarized.
For men, an intake of approximately 3.5 grams of potassium is recommended each day, while women are recommended to get 3.1 grams. To avoid low potassium levels, both in the blood and elsewhere in the body, a minimum intake of 1.6 g per day is necessary for both women and men.
Sodium is a mineral that is important for maintaining the composition of body fluids. Ordinary table salt contains sodium in the form of salted sodium chloride, and together with prepared foods are common sources of sodium. Most people get too much sodium and should limit their salt intake.
Potassium cannot be formed in the body and must be supplied through food and drink. Important sources include: fruit and vegetables, especially bananas, melon, dried fruit, avocado, Brussels sprouts. Certain cereal products, nuts and seeds.
Magnesium is important for, among other things, the building of strong bone tissue and supporting tissue. Magnesium is important for the nervous system to function, including the transmission of nerve impulses to the heart and muscles. Energy production and metabolism. Regulation of calcium and potassium status in the body. Magnesium is used, for example, against leg cramps and other muscle spasms.
Magnesium deficiency. Early signs of magnesium deficiency are loss of appetite, nausea, vomiting, lethargy and weakness. Some complain of numbness and tingling in the arms and legs, muscle tension and muscle cramps, epileptic seizures, personality changes.
Magnesium is, as mentioned earlier, very important for the body, and it is therefore both important and good to eat foods that contain magnesium. Taking magnesium supplements regardless is very beneficial, especially for us who meditates and practices Yoga!
Overstimulating our nervous system through power breaths, and raising too much energy in general, can cause muscle tension, muscle cramps and spasms. Our body needs time in building a solid foundation in relatively small steps that builds on each day, depending on time. Until the body have adjusted to a higher amount of bio-electricity, you can do more. Until then, go slowly, step in step. A great guide is HP Hooded Cobras 40 days program for beginners:
https://satanslibrary.org/hp_hooded_cobra_40_day_meditation_program.pdf