Your Body and Water - Part 7

You May Need More Water If You're in a Hot Area

Water is essential for regulating your body temperature, so if you're outside on a hot day or stuck inside without air conditioning, you're going to need more water as the heat causes you to sweat more. Even if you're not active, spending the day in 90-degree temperature conditions could more than double your fluid requirement. And even more if you're physically active.