# Hydration for Summer Athletes: Beyond Just Drinking Water
Every June, we see the same pattern at Advanced Health & Physical Therapy Solutions: athletes and weekend warriors push hard through summer training, then show up with nagging muscle cramps, early fatigue, or worse—soft tissue injuries that could have been prevented. Often, the culprit isn't effort or conditioning. It's hydration strategy.
Here in Bernardsville, our summers can be humid and unforgiving. Whether you're training for fall sports, running morning miles before work, or coaching your kids through summer camps, how you hydrate matters just as much as how much you hydrate. Most athletes—and we've worked with plenty of them—get this wrong.
Let's talk about what actually works.
Why Plain Water Isn't Enough After 60 Minutes
You've probably heard that you should "drink more water." That's true. But here's what we've found with our athletic patients: if you're exercising hard for more than an hour in heat, plain water alone can leave you depleted and cramping.
When you sweat, you lose sodium along with fluid. Sodium is crucial—it helps your muscles contract properly, it signals your body to hold onto the water you drink, and it maintains the electrolyte balance your nervous system depends on. Drink only water during prolonged exertion, and you dilute your blood sodium levels. That's called hyponatremia, and it's why some athletes feel dizzy, nauseous, or get terrible cramps despite "staying hydrated."
Our recommendation? If you're training for more than 60 minutes in warm weather, add electrolytes. That doesn't mean fancy sports drinks loaded with sugar. A simple mix of water, a pinch of salt, and carbohydrates (like fruit juice or a sports drink with 6–8% carbs) does the job. Your body absorbs this mixture faster, maintains your sodium, and sustains your energy.
We've seen this switch alone eliminate cramping issues for runners, soccer players, and cyclists who trained regularly through New Jersey summers.
The Timing Game: Before, During, and After
Most athletes focus only on drinking during exercise. That's part of the picture, but it's incomplete.
Before you start: Drink 16–20 ounces of fluid 2–3 hours before activity, then another 8–10 ounces about 15–20 minutes before. This pre-loads your hydration. Don't wait until you're thirsty to start—thirst is already a sign of mild dehydration.
During exercise: Aim for 7–10 ounces every 10–20 minutes, depending on intensity and sweat rate. Some of our patients track this by sipping at fixed intervals rather than waiting for thirst. It sounds rigid, but it works.
After you're done: This is where many athletes slip up. Drink 16–24 ounces of fluid for every pound of body weight lost during exercise. Check your weight before and after training—the difference tells you how much to drink. Include sodium and carbs in your post-workout drink; your muscles recover better that way, and your body retains the fluid longer.
We've had athletes—especially desk workers who train early morning or after work—come in with lingering fatigue or persistent soreness. Often, they were hydrating during workouts but not before or after. Fixing that window made a real difference.
Heat Acclimatization: A Game-Changer You Can't Skip
Here's an angle we don't hear discussed enough: your body gets better at handling heat over time, but only if you give it a chance.
When you first start training in summer heat—or if you return after a break—your cardiovascular system works harder to cool you down. Your heart rate climbs, your sweat response lags, and you feel exhausted faster. Over 10–14 days of gradual heat exposure, your body adapts. Sweat production increases, your core temperature drops faster, and the same workout feels easier.
But there's a catch: you have to actually do this gradually. Jumping from air-conditioned training to full summer heat and max effort is a recipe for heat illness and soft tissue injury. Our team recommends easing into summer training intensity. Spend the first week or two at reduced effort, even if you feel capable of more. Your body is learning.
This is especially important for young professionals moving to the area, or parents returning to running after spring hibernation. Give yourself that acclimatization window, and you'll perform better and stay injury-free.
Your Action Plan
Start with these three concrete changes:
1. Add electrolytes to water for any training session over 60 minutes. 2. Drink on a schedule, not just when thirsty (7–10 ounces every 15 minutes during exercise). 3. Ease into summer intensity with 10–14 days of gradual heat exposure before pushing hard.
If you're dealing with recurring cramping, fatigue that doesn't match your effort, or any musculoskeletal issues related to summer training, our team at Advanced Health & Physical Therapy Solutions is here to help. We work with athletes of all levels—runners, weekend warriors, young professionals, and families—to keep you healthy through the season. Stop by our Bernardsville office or call us to discuss your training plan and how hydration fits into your injury prevention strategy.
Your summer performance depends on it.