One way of checking how much fluid you have in you body it to life the skin on the top of your hand. Pinch the skin with your thumb and index finger. Pull up the skin and then release. The skin should refill with blood and fall back onto the top of the hand within a couple of seconds at most. It the skin does not refill and lays there you are low on fluids. This is called skin turgor. Look it up.

I was having minor arrhythmia and for two days had a headache when I woke up. I read that it could be because of dehydration. I am 76, and when I grew up my mother never served water at mealtime and we drank water only when real thirsty. I also read that alzheimers could be attributed to dehydration.

I did not measure, but I would say that I was drinking maybe a cup or little more a day. I do not drink sodas nor juices. So, at the 1st of January this year I was determined to drink more water. It is very difficult for me because for another reason, it is difficult for me to swallow fast, so it is literally taking the whole day to sip 4=5 cups a day. I know I want to increase, but for me this was a huge increase. The headache went away the first day and never returned, and the heart beat issue decreased to nothing in about three weeks. I no longer have them at all, and am walking daily.