You all must have heard from your family to drink more water during summers but did you ever realised that how is it affecting your body? A new study revealed that drinking too much of water during summers could affect the metabolism of your body and it can lead to over hydration. Researches suggested that it can lead to lower sodium levels and can also lead to brain swelling. Hyponatremia, a condition which leads to brain swelling and can cost your life. this is most common with those who drink a lot of water. The problem occurs in common pathological conditions which may also result in cardiac arrest and brain injury. An average healthy person drinks 10-13 cups a day. You must know that every person's body has different water levels which is based on excursion,activity level, weather, age weight and sex. There is no fact that how much water a person should drink in a day. High temperatures and illness needs more liquid intake. Your urine colour is a good indicator to get an idea on water levels in your body. Pale yellow lemonade colour urine is good. If its colourless then it means that your body is over hydrated. Darker the colour, larger is the risk of kidney failure. It was still uncertain that how hyponatremia actually happens but some researches suggested that our brain can not detect over hydration in the same way as they detect dehydration. Over hydration activates Trpv4, a calcium channel which can be found in Glial cells surrounds hydration sensing neurons. it is a gatekeeper which maintains water balance in our body. Study shows that it is the Glial cells which first detects the over hydration and then transfer the information to neurons. The report was published in "Journal Cell Reports" showed that over hydration is first identified which triggers the release of a amino acid Taurine which acts as a trip wire to inhibit hydration sensing neurons.