13 Warning Signs You’re Way Too Dehydrated

An increase in heart rate is another sign you might be dehydrated, caused by the fact the body doesn’t have as much blood circulating. Blood volume is lower, and the heart beats faster to compensate, causing an increase in heart rate. This is why you may feel palpitations.

If you sleep well but for some reason always feel tired, the reason could be as simple as not enough water. The rule of thumb is to have at least two glasses of water every hour, according to WebMD. What’s making you feeling tired may be the fact that your heart is working harder to pump blood to compensate for the loss of volume of blood due to dehydration. Also, your muscles lack water, so performing any physical tasks can feel like a lot of work. Feeling tired all the time, and maybe drinking a lot of coffee in the afternoon for a quick boost, may also be signs of a serious health problem.

When the skin under the eyes looks dark, sunken, or hollow, you should probably drink some water. Dehydration is a very common cause for sunken eyes. Fluid retention under the eyes may lead to the extra “baggage” and for the skin to become more transparent, letting blood vessels and dark tissue underneath show. This can also be a lesser-known symptoms of an allergic reaction to something serious.

Next time you take a few too many seconds to answer a simple question or look at a picture without understanding what you’re seeing, drink some water and try again. A study of the effects of dehydration on cognitive performance and mood among young men showed that even mild dehydration can lead to confusion, decreased vigilance, and poor working memory. Find out what else leads to memory loss.

Most muscle cramps develop in the calves, and they are painful. The sudden and sharp pain you feel may have been prevented if you drank more water. Water helps muscles contract and relax. Lack of it puts a strain on them. When the blood flow to the muscle is reduced it can cause cramp-like pain.