Training in the Florida Heat: Hydration, Electrolytes & Summer Injury Prevention

Training in the Florida Heat: What Your Body Actually Needs This Summer

Summer in Florida doesn't ease you in. One day it's a pleasant May morning, and the next it's a full-on sauna before 9 a.m. For anyone who stays active year-round — whether that's CrossFit, running, outdoor sports, or just keeping up with life — the shift in season demands a shift in how you prepare your body.

In this episode of the Movement Driven Podcast, Dr. Greg Goldberger breaks down the physiology of training in the heat, why hydration is more complicated than most people think, and what you can do right now to protect yourself heading into the hottest months of the year.

What Heat Actually Does to Your Body

The fatigue you feel during a summer workout isn't just in your head — it's a real physiological response. When temperatures rise, your body has to divide its energy between two jobs at once: generating output for your workout and regulating your internal temperature. Blood gets pushed toward the skin to help dissipate heat, which means your heart is working harder for dual purposes. Heart rate climbs faster. Breath gets shorter. You feel gassed at an intensity that would have felt manageable just a few months ago.

For people with underlying cardiovascular concerns, that added strain deserves extra attention. But even for generally healthy, active individuals, the heat creates a margin for error that doesn't exist in cooler conditions — and ignoring it is where injuries and illness begin.

The Hydration Mistake Most Active People Make

Here's something worth sitting with: drinking a lot of water isn't the same as being well-hydrated.

When you sweat, you're not just losing water — you're losing sodium, potassium, magnesium, and other electrolytes that your muscles and nervous system depend on to function properly. These minerals regulate how cells communicate, how muscles contract, and how efficiently your body moves. Flood your system with water alone and you can actually dilute your electrolyte balance, creating an imbalance that leads to cramping, fatigue, and poor performance.

Dr. Greg points out that by the time you feel thirsty, you're already behind. For prolonged outdoor activity or events in the heat, preparation needs to start 24 to 48 hours out — not when you're already sweating through your warm-up.

Electrolytes: More Than a Packet in Your Bottle

Electrolyte supplements are a useful tool, but they're one piece of a bigger picture. Nutrition plays a role too. Foods like watermelon and cucumber carry meaningful water content, and incorporating them in the summer months is a practical way to add hydration through what you eat — not just what you drink.

For cramping specifically, magnesium and potassium are key targets. Pickle juice has earned its reputation as a quick fix for a reason — the sodium content is real and fast-acting. But if you're cramping in the same muscle group repeatedly, that's a different signal. As Dr. Greg puts it, random cramping across the body points to dehydration or electrolyte imbalance; cramping that keeps coming back in the same spot usually points to localized weakness — something worth addressing directly.

Summer Is When Injuries Happen

Spring gets the reputation for injury season — people coming out of winter, moving more, doing too much too soon. But summer carries its own risk profile. The combination of heat intolerance, reduced energy output, and the tendency to take on activities outside of normal routine (vacations, sports, outdoor events) creates conditions where things break down.

The fix isn't to stop moving. It's to adjust. Train earlier or later in the day when temperatures are lower. Seek shade when you can — even a ten-degree difference matters. If you're traveling or new to Florida heat, give your body time to acclimate before pushing at the same intensity you would in cooler weather. And listen to the signals your body sends before they become a problem, not after.

The Bottom Line

Heat changes the rules. The same workout, the same effort, the same intensity — all of it lands differently when your body is managing temperature on top of everything else. Building in proper hydration, adjusting expectations, and giving your body what it actually needs to perform goes a long way toward staying healthy and moving well all summer long.

If something does flare up — or if you've been carrying something that just won't resolve — that's worth looking at sooner rather than later. Catching it early keeps it simple.

Ready to move better this summer? Book a free 15-minute discovery call or schedule your first evaluation for $79. You'll get a full movement assessment and a plan built around your body — not a generic protocol.

🎧 Listen to the full episode on Spotify, Apple Podcasts, or YouTube.