Dehydration can cause headaches, exhaustion, & a decline in mental & physical function, so it's crucial to stay hydrated for general health. 51 bonusDrinks like herbal teas, infused water, and low-sugar drinks can help you stay hydrated overall in addition to water. Sugary drinks like soda and energy drinks should be consumed in moderation because they can lead to an excessive calorie intake & have detrimental health effects.