Read the given passage and answer the following questions carefully - 

Hydration is a simple yet often overlooked aspect of our overall health. Water constitutes about 60% of the human body and plays an essential role in its function. It helps regulate body temperature, lubricate joints, aid digestion, and keep our skin healthy, among other benefits.

Dehydration, or the lack of adequate water intake, can lead to a variety of health problems, ranging from mild to severe. On the lesser end of the spectrum, dehydration can cause fatigue, headaches, and difficulties in concentration. When it becomes severe, dehydration can lead to more serious complications such as heat stroke, kidney failure, or even seizures.

It's crucial to remember that hydration needs can vary from person to person. Factors like climate, physical activity levels, age, and individual health conditions can significantly influence the amount of water needed. For instance, individuals who engage in high-intensity workouts or live in hotter climates will require more water compared to those living in colder regions or leading a sedentary lifestyle.

This is why, instead of sticking to the generic advice of drinking eight glasses of water a day, we should listen to our bodies. Signs like feeling thirsty, darker urine color, dry mouth, and fatigue are signals from our body indicating that it needs more water.

In conclusion, maintaining hydration isn't just about quenching thirst - it's crucial for our overall health and well-being. So let's make a conscious effort to ensure we're adequately hydrated throughout the day, because every cell, tissue, and organ in our body relies on water to function properly.