Heat-related illnesses, like heat exhaustion, happen when the body overheats after exposure to high temperatures. Learn more about heat stroke and other heat-related illnesses.

Breaking a sweat on an already-hot summer day may not always be appealing, but there are many safe ways to keep fit in the heat—no matter your age or activity...

After spending so much time indoors during the past year, it probably feels like you've missed out on a lot of sunlight. And as summer kicks off, it's certainly tempting...

Sparkling water is a refreshing alternative to sugary drinks, but many may wonder if it’s healthier.