We've all heard it a hundred times — you need to drink eight glasses of water a day in order to stay hydrated. But that's an average number, and it's not always the right one for everyone.
The video above by Buzzfeed goes into a few ways to tell if you are actually dehydrated. The most common (and logical) sign? Feeling thirsty, which actually indicates that you don't have enough water in your system.
Of course, depending on your weight, gender, health conditions and a few other factors, the amount of water you should take in each day can vary. Nutrition.com has a helpful water calculator that runs you through those general questions, while CamelBak (water backpack creators) can help you calculate your intake per physical activity.
Take a look at the video and tell us — how do you get more water into your day?