1. Your metabolic rate will spike.
“If the human body consumes 16 ounces of water in a given hour, the metabolic rate will spike by as much as 30% for the next 30 to 40 minutes. By committing to drinking half your body weight in ounces of water each day (or aim for that gallon), research says you can expect to lose more weight.” She continues, “There is a single enzyme—called lipase—that must be activated in your body in order to mobilize fat. Water is one of the many necessary components in the activation of lipase.”
2. Your workouts improve on a cellular level.
“In terms of fitness,” says Kara Griffin, a personal trainer, holistic nutritionist, and health coach, “water is the key to healthy, well-functioning cells. So drinking enough is going to help with exercise on a cellular level. Staying hydrated will increase performance across all exercise forms, but chugging water before a workout can not only cramp you up but also make you feel more sluggish and less focused on the task at hand. Drink a glass of water 20 to 30 minutes before your next workout, and take little sips throughout (if needed) to get you closer to your personal peak performance.”
3. Your wrinkles will not disappear.
“When you drink water, it doesn’t go directly to the skin,”It runs through the intestines, gets absorbed into your bloodstream, and then is filtered out by the kidneys. At this point, it will hydrate the cells inside the body.
“Wrinkles are due to DNA damage from the UV light. Drinking water will not reverse this process, and hydration levels in the skin have very little to do with drinking water internally. Rather, how you treat your skin on the surface [is important]. For example, if you’re using harsh bar soaps and detergent-based cleansers to wash your face, they will have a bigger impact on the lack of surface hydration in the skin than not drinking water ever will. You can make wrinkles soften and appear less noticeable with regular use of exfoliants, retinol, barrier-repairing moisturizers, and masks.”
4. You’ll stop retaining excess fluid around your eyes.
Both eating high-sodium foods (particularly at night) and not drinking an adequate amount of water can definitely cause you to retain excess fluids around the eyes and experience more-than-normal under-eye puffiness. I know firsthand that when I have not been drinking enough water during the day, the following morning I will always be puffier under my eyes than normal.
5. You cut unnecessary calories from your diet.
“First, drinking this much water will replace sugary drinks,” says Griffin. “It’s also important to remember that water intake doesn’t just come from guzzling water—it also comes from what you eat! You naturally up your water intake by eating clean, unprocessed, whole fruits and vegetables.” An easy example? Watermelon is 93% water.
Drinking enough water and eating whole fruits and veggies also means you’re cutting processed foods that usually have high sodium content.