If you’re feeling parched or fatigued after a workout or anytime during your normal daily routine, chances are you may be dehydrated. Neglecting to replace fluid losses can severely alter your energy levels, state of mind and health. That’s why rehydrating quickly can help get you back on your feet.

Learn how much water you really need in a day, symptoms of dehydration and how to rehydrate swiftly and simply. It’s a widespread myth that you should drink eight glasses of water daily. The truth is that fluid recommendations vary based on a person’s age, activity level, size, sweat rate and living conditions.

Yet, water makes up about 60% of the body, and the body is constantly losing fluid through urine, sweat and respiration. That’s why hydration is an essential part of human life. But figuring out how much fluid an individual needs isn’t always simple.

The (NAM) states that the daily adequate intake (AI) of water is nine (8-ounce) cups for women and 13 for men. The AI is set to prevent short-term dehydration, but some people may need more water, especially if they sweat a lot or live in hot and humid conditions. In addition, NAM recommends consuming about 20% of your fluids through foods, like fruits and vegetables.

Dehydration happens to everyone, even those who closely follow the recommended fluid guidelines. It’s extremely common after an intense workout or prolonged time in a hot or humid environment. Dehydration can also occur if you forget to drink enough .