4 Subtle Signs You Need More Water

Water—you need it to survive. It facilitates many functions, and it makes up roughly 60 percent of your body. Unfortunately, according to the National Institute of Health, about 75 percent of Americans are chronically dehydrated. During the hot summer months, more than any other time of year, staying hydrated is especially important.

Some signs of dehydration are pretty clear, while others are more subtle. So how can you tell if you need more water? Look out for these indications!