Not drinking enough water before a morning run, sweating a ton at the gym, forgetting a water bottle to sip during spin class, and steamy temps are surefire ways to put us on a path to dehydration doom. Staying hydrated while exercising is important because of the added sweat loss (compared to day-to-day activities like working at a desk or watching TV). Tossing back some H2O while working out can also help us fight fatigue and prolong endurance. Before you turn into a raisin inside and out, check out these 10 ways to prevent mid-workout dehydration.
Good old H2O is critical for rehydrating when the body experiences fluid loss, such as when we sweat. Even though many gyms like to keep pricey sports drinks and protein shakes stocked on their shelves, most of the time, water will do the trick just fine. Shoot to sip seven to 10 ounces of fluid every 10 to 20 minutes during exercise to stay properly hydrated. If you’re working out for longer than an hour or doing a particularly intense exercise (like running a marathon or participating in a tough training session), you will probably need to replace electrolytes too—this is where a sports drink or electrolyte-enhanced water comes in handy. However it’s also important to be wary of overhydration: Too much water can lead to hyponatremia, which is when excess water in our bodies dilutes the sodium content of our blood. “It is most often caused by long duration exercise and either drinking fluid at a rate that is more than fluid losses or only replacing fluid losses with hypotonic fluids like water,” CamelBak hydration advisor, Doug Casa, says.
2. Sip on sports drinks and coconut water.
When we sweat, we lose electrolytes, which are minerals found in the blood that help to regulate (among other things) the amount of water in the body. Research suggests sports drinks can help prolong exercise and rehydrate our bodies because they contain electrolytes, which plain old water does not. While an ordinary workout may not require electrolyte-replenishing, those participating in longer and more intense periods of exertion, such as running a marathon or going through a particularly intense workout, will benefit from a good dose of electrolytes mid-workout. Not into sports drinks or want a more natural alternative? Water-enhancing electrolyte tablets, coconut water, or a homemade sports drink could be potentially effective substitutes.
3. Turn to fruit.
Many fruits are a great source of both electrolytes and fluids, though the dose of electrolytes can differ from fruit to fruit.
4. Weigh yourself.
Hop on the scale before and after exercise. For each pound lost during activity, drink an additional 16 ounces of fluid. If your body weight change is three percent or more, you may be experiencing significant to serious dehydration.
5. Check the toilet.
If you’re taking a mid-set break to hit the loo, check on the color of your urine to make sure you’re staying hydrated. When properly hydrated, urine should be pale yellow in color. Though it may be tricky to keep an eye on it, try to watch the urine stream, since the color of urine will dilute when it hits the toilet water. Store this handy, dandy urine color test in your phone or wallet to make sure your piddle is up to snuff—dark yellow urine may indicate dehydration.
6. Tame thirst.
Whatever you’re drinking, be it water, juice, or sports drinks, make sure to take a sip or two whenever you feel thirsty. Even if you’re not feeling totally parched, mild thirst is still a sign of impending dehydration.
7. Pay attention to your muscles.
Lean muscle tissue contains more than 75 percent water, so when the body is short on H2O, muscles are more easily fatigued.
8. Pinch yourself. (No, really.)
Go ahead, pinch yourself! Skin turgor, which is the skin’s ability to change shape and return to normal (or more simply put, it’s elasticity), is an easy way to check your hydration (though not 100 percent reliable for everyone).
9. Keep dry mouth at bay.
One of the first signs of dehydration is dry mouth. If your mouth starts feeling like the Sahara, head to the water fountain (or take a sip from your reusable water bottle!). A short water break between sets or during quick breaks from cardio can help stave off exercise-induced dehydration.
10. Stop if you get the dizzies.
Feeling lightheaded during a workout is a sign of dehydration and a signal to tone it down a notch.
Next time you plan for a sweat sesh, keep these tips in mind for a safe, hydrated workout.
Originally published January 2014. Updated July 2015.