pper water is also recommended to people suffering from vitiligo, where it helps formation of melanin. However, just like anything else, excess of copper in the human body can be detrimental to health as well. Pregnant and lactating mothers should limit their consumption of copper and an adult should not take a dose of more than 10mg daily if consuming in a tablet form. After starting on copper water, many do not need cold water to satisfy the thirst. With yoga, pranayama and other breathing techniques, senses become so sharp that taste and quality of water can be sensed adequately. Though copper water is slightly ionic, it does not cause gastric acidity to increase. On the other hand, due to increased Agni and digestion, acidity reduces. ~ Dr.Shirish Bhate Ancient Indians used to throw copper coins in rivers, lakes, ponds and wells. Todays generation, without thinking of the meaning behind this act, are ignorantly throwing nickel, aluminium coins into rivers, which is of no use and in fact detrimental to the environment. The idea behind throwing coins into water is not about the blind faith of river worship but to kill the harmful bacteria in water with copper (copper coins were used in ancient past) and this purified water would be useful for fish and other living beings within the water and the humans and animals drinking it would remain healthy. Some countries like USA still use copper to make pennies which can also be thoroughly cleaned first and dipped in a vessel overnight to purify water naturally. copper plate yantra So, they made yantras on thin copper plates with mysterious geometrical patterns. Also according to Mantra Sastra, Mars (Mangal/Kuja) controls this science of mantras, yantras etc and the metal related to this planet is Copper. If someone suffers from excess heat in body due to mars in their horoscope, it is advised to wear a copper bangle/bracelet on active hands wrist. This helps them balance the body temperature as they start sweating during the day and green color layer, similar to coppe