A video circulating on social media claims to show a quick and effective method for checking oneself for dehydration. The video shows two people pinching the skin around the top of a knuckle so it ...

With millions in the U.S. under heat advisories, and as extreme heat continues to claim more lives, it's more important than ever to stay hydrated. In high temperatures, it's easy to get dehydrated, ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. TikTok is a fantastic ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

Here are a few ways your body may be telling you it needs fluids → Cassidy Araiza for The New York Times Thirst It might sound obvious, but feeling thirsty, particularly if your mouth is dry, is the ...

Amid the record-breaking heat gripping large areas of Europe and the U.S., staying hydrated is essential to staying healthy and safe. Here are a few ways your body may be telling you it needs fluids → ...