Editor's note: Editor’s note: One Small Thing is a new series to help you take a simple step toward a healthy, impactful goal. Try this one thing, and you’ll be heading in the right direction.

(CNN) — What are you focusing on in the new year to improve your health? Regular exercise, of course, is a proven winner, as is eating plant-based meals. Getting more high-quality sleep, reducing stress, limiting alcohol and connecting with other people in meaningful ways are also key ways to boost well-being.

However, there is one behavior change often overlooked when we think about improving our health in the new year: hydration. Water is the elixir of life, but few people make drinking enough a priority.

Yet it’s so easy — there are no gyms to join, no meals to prepare, no need to scour the internet for a tasty mocktail — and experts say water’s benefits are almost too numerous to mention. Drinking plenty of water can improve blood pressure, diabetes, joint, gut and kidney health as well as ease migraines and boost the glow of your skin, among other benefits.

“Staying optimally hydrated is a relatively easy lifestyle modification with potentially significant benefit: a longer disease-free life,” said Natalia Dmitrieva, a research scientist in the Laboratory of Cardiovascular Regenerative Medicine at the National Heart, Lung, and Blood Institute in Bethesda, Maryland.

Just one small thing

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How can you add this one small thing to your daily life? Attach drinking a full glass of water to other key routines you do without thinking.

Coffee or tea drinker? While you wait for your coffee to perk or your tea kettle to whistle, fill a glass with water (add ice if you prefer, like me) and drink it down while you wait.

Taking the dog for a walk? Fill a stainless steel or ceramic water bottle (to avoid plastics of course) and drink it down before you return.

Getting up to stretch? Grab a glass of water and drink it before you sit back down.

Heating up a lunch? Drink a full glass of water during the time it takes your food to get hot.

Experts on habit formation say that if you attach a new habit to an old one — called habit stacking — it’s easier to remember to accomplish the new task. And downing a refreshing glass of water while you wait is a healthy way to multitask.

You may not realize you’re dehydrated

Statistics show Americans often fail to drink enough water, said Dmitrieva, who has studied the link between hydration and aging.

Many experts suggest women drink about eight to 10 cups of water daily and men consume 10 to 12 cups, she said. “However, more than 50% of Americans do not meet these recommended levels,” Dmitrieva said via email.

“One reason for this shortfall is that most people do not consciously consider how much water they need to drink and are often unaware of these recommendations.”

Another key reason is that many drink only during meals or rely on a sensation of thirst to act. However, that’s much too late.

“Thirst often occurs when we are already underhydrated, meaning the harmful effects of insufficient hydration may have already begun,” Dmitrieva said.

Do you have to drink only water to meet your needs? No, says the US Centers for Disease Control and Prevention. Plain coffee or tea, sparkling water, seltzers and flavored waters are low-calorie choices. However, regular sodas, fruit drinks, sports drinks, energy drinks, sweetened waters, and sweetened coffee and tea have no nutritional value and should be avoided.

Some foods also contain water and can help with hydration: “Examples include tomatoes, cucumbers, oranges and lettuce, all of which can significantly contribute to your daily water intake,” Dmitrieva said.

Ready for another tip? Aim to drink 2 to 3 quarts of water on regular days without intense physical activity or prolonged time in hot environments — you’ll need even more then, Dmitrieva said.

“One effective strategy is to fill a 32-ounce bottle with water in the morning and make sure to drink it throughout the day, in addition to any other beverages consumed during meals or coffee breaks,” she said. “At the end of the day, assess whether you’ve consumed an additional 4-6 cups of water. If not, refill the bottle and drink more before the day ends.”

Ready to do more to nourish your body? Sign up for our Eat, But Better: Mediterranean Style newsletter. If you need help setting and sustaining your goal to drink more water, try these tips for building habits.

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