Note: this piece first appeared in the May 2007 issue of Clark Wellness ForkBytes.

Water is essential for life. The cytoplasm in each and every cell of your body is about 70 percent water (incidentally, about 70 percent of Earth’s surface is also water). Those cells make up every part of you, from your liver to your skin to your heart to your brain. Maintaining water balance on the cellular level is essential for every function of your body. Because our individual cells are mostly made up of water, supporting their natural state by taking in lots and lots of water makes us feel better and function at our best.

Appropriate water intake also supports the body’s natural cleansing processes. Drinking lots of clean, fresh water ensures that toxins are flushed out of the body rapidly and regularly. Simply adding more water to your daily intake helps create a cleanse-like effect in the body even if you don’t change your diet.

So how do you know whether you’re drinking enough? The easiest way to tell is to start noticing your urine. Urine should be pale and odorless. If your urine is a dark color or has a strong odor, increase your water intake.

High–water content foods are also key for cleansing the body. Vegetables, such as cucumbers and celery, and fruits, especially melons, have a much higher water content than other foods, such as beans, grains, and animal proteins. High–water content foods should be eaten in addition to water you’re drinking rather than in place of it. Browse our recipes for some tasty ideas!

For a gentle short-term cleanse, try emphasizing simply prepared high-water content fruits and vegetables and de-emphasizing (or temporarily eliminating) proteins and grains for a few days. Be sure to drink lots of water throughout!

Cool, clear, and refreshing: As a slightly intoxicated Monica on Friends once proclaimed, “Water rules!” Water is essential for all bodily functions and processes. It flushes out toxins, it purifies the body, and it keeps the skin clear and hydrated. Water is especially important during the hot summer months, particularly if you enjoy playing hard in the sun—when you lose fluids quickly, you may become dehydrated before thirst kicks in. Those who are not drinking enough may experience poor digestion, sluggish thinking, skin breakouts, headaches, bad breath, and general fatigue.

Water is great for weight loss, too. It can quench your thirst without adding calories, and water-containing foods, such as broth-based soups and high-water fruits and veggies (watermelon, grapefruits, apples, bananas, tomatoes, celery, cucumbers, zucchini, asparagus, broccoli, bok choy, onions—most fruits and vegetables are 80 to 90 percent water!), will fill you up without filling you out. If you’re trying to lose weight, try having some light gazpacho or a small green salad before your entrée. Eat slowly and notice how quickly you really feel full. Bonus: High-water fruits and vegetables are also very cooling to the body, so they’re great to eat in hot weather (pitta season!).

It’s important to get clean water. Water pollution is a serious (but relatively unpublicized) problem in many parts of the United States, and some D.C.–area tap water was recently found to be contaminated with lead. Have your tap water tested and be sure to use a good filtration system to purify your drinking water, or find a good bottled water to drink.

How do you like your water? I like mine straight up at room temperature or slightly cool. Some people like chilled water or water with ice. Others enjoy flavorful additions to water, such as fruit wedges, cucumber slices, parsley sprigs, mint leaves, or a squeeze of orange or lemon juice. Experiment with a few new additions to your water pitcher this month, and keep a bottle or glass of water close by at all times to encourage and remind you to sip. Stay hydrated and refreshed… and enjoy!