Key Takeaways

1. Electrolytes help support hydration, blood volume, nerve signaling, and muscle contraction during exercise.

2. Tart cherries may help buffer exercise-related oxidative stress and post-workout muscle soreness.

3. When choosing electrolytes, check sodium first, then look at potassium and magnesium.

4. For tart cherry supplements, look for Montmorency tart cherry, a clear dosage form, and an effective dose.

5. Electrolytes work best when taken in small, repeated amounts based on sweat loss, weather, and workout duration.

6. Tart cherry supplements are best used consistently during demanding training blocks and around competitions.

5 Min Read

In the first part of this series, we covered whey protein and creatine monohydrate. These supplements help provide the building blocks your body needs to repair tissue and support strength output.

But recovery is not only about protein and creatine.

For active people, especially those who spend more time doing endurance training, recovery also depends on how well the body handles fluid loss, heat, muscle stress, and repeated training load.

That’s where electrolytes and tart cherries come in.

Electrolytes help support hydration, fluid balance, and neuromuscular function during longer exercise.

Think of them as part of your body’s control system: they help fluid stay in circulation while also supporting the nerve signals and muscle contractions that keep you moving.

In hot weather, long sessions, or heavy sweating, drinking water alone may not be enough. If you replace large amounts of fluid without enough sodium, blood sodium can become diluted and your body may have a harder time staying balanced.

Tart cherries may support recovery in a different way.

After endurance exercise, your body can feel like an engine that has been running hard for a long time. Tart cherries act a bit like a “recovery buffer,” helping the body respond to post-workout oxidative stress and muscle soreness.

This article focuses on electrolytes and tart cherry supplements. Carbohydrates are also a core part of endurance recovery, and we’ll cover them in a later post.

Electrolyte Supplements

Electrolytes are charged minerals in your body. Common electrolytes include sodium, potassium, magnesium, calcium, and chloride.

Why do they matter for exercise?

Because when you sweat, you lose more than water. Sweat also carries away a large amount of sodium, along with smaller amounts of potassium and magnesium.

In general:

Sodium helps maintain blood volume and supports a more stable circulatory system.

Potassium and magnesium are involved in nerve signaling and muscle contraction.

For exercise hydration, sodium is usually the first electrolyte to check, especially if you train for a long time, sweat heavily, or exercise in hot weather.

If fluid and electrolyte loss becomes high, you may notice thirst, dizziness, weakness, or an elevated heart rate.

Some people may also experience muscle cramps, although exercise-related cramps are not caused by electrolyte loss alone. Fatigue, training load, and muscle stress can also play a role.

Electrolyte supplements come in many forms, including powders, effervescent tablets, ready-to-drink beverages, capsules, gummies, and carbohydrate gels that include electrolytes.

Their main job is simple: help replace lost fluid and sodium while supporting muscle contraction and nerve signaling.

A 2023 study published in the European Journal of Applied Physiology looked at 11 endurance-trained male participants cycling for about three hours in 34°C heat and 65% humidity.

Researchers compared low- and high-sodium drinks — 21 mmol/L and 60 mmol/L — and measured changes in plasma sodium and plasma volume (Wijering et al., 2023).

After exercise, plasma sodium increased by 0.8 mmol/L in the high-sodium group, while it decreased by 1.5 mmol/L in the low-sodium group.

In other words, during long periods of sweating and continuous fluid intake, sodium in the drink helped offset both sweat loss and water dilution. This made it easier to maintain sodium concentration in the blood.

The study also found that plasma volume decreased by 2% in the low-sodium group but stayed nearly unchanged in the high-sodium group.

Why does that matter?

When plasma volume drops, the circulatory system has less fluid available to support blood flow and heat dissipation. Over time, this can make hydration and temperature regulation harder to manage, especially during long exercise in the heat.

Think of it this way: water replaces the fluid you lose. Sodium and other electrolytes help that fluid stay where your body needs it — in circulation — rather than being flushed out too quickly.

Tart Cherry Supplements

Tart cherry supplements often come from Montmorency tart cherries, a sour cherry variety commonly used in exercise recovery products. These are different from the sweet cherries you usually find in supermarkets.

Montmorency tart cherries can be processed into juices, concentrates, powders, capsules, and gummies through juicing, concentrating, freeze-drying, or spray-drying.

Their key value comes from plant compounds such as polyphenols and anthocyanins. However, it’s worth keeping in mind that tart cherry juices and concentrates may also contain more sugar and calories.

Endurance exercise often involves long periods of effort and repeated impact. Over time, this can increase oxidative stress and inflammation.

Tart cherry compounds may help regulate post-exercise inflammatory signals, but they do not work like painkillers. They are better understood as a recovery-support tool for certain demanding training situations.

A 2024 study published in the Journal of Men’s Health included 24 male college soccer players following a controlled diet. Participants consumed 70 ml of tart cherry juice or a placebo twice daily for three weeks, then completed periodized resisted sled training during the fourth week.

Researchers tested several markers immediately after training and again at 24, 48, and 72 hours. The tart cherry juice group showed smaller losses in lower-body strength and faster recovery (Yu et al., 2024).

This suggests tart cherry juice may support lower-body functional recovery after certain high-intensity sprint or muscle-damaging workouts.

How to Choose a Product

As with whey protein and creatine, the general rule is simple: the clearer the formula, the better. The more transparent the dose, the better.

Ideally, look for third-party testing or batch testing. For endurance athletes, gut tolerance also matters.

During a race or long training session, the biggest problem is not whether a supplement looks advanced. It’s whether your stomach can actually tolerate it.

Electrolyte Supplements

When choosing an electrolyte product, check sodium first, then look at potassium and magnesium.

People who sweat heavily or often notice salt marks on clothing after exercise may benefit from paying closer attention to sodium content. For short, easy sessions, a high-sodium formula is usually unnecessary.

If you have high blood pressure, kidney disease, or have been told by a doctor to limit sodium, talk to a healthcare professional before using high-sodium electrolyte products.

Tart Cherry Supplements

For tart cherry supplements, look for products that clearly mention Montmorency tart cherry. Then check the dosage form and effective dose.

Juices and concentrates are closer to whole-food forms, but they usually contain more sugar. Capsules, powders, and gummies may be more convenient, but avoid products that are basically “cherry-flavored candy.”

How to Use

For most people, plain water is usually enough for sessions under 60 minutes, unless the workout is very hot, humid, or unusually sweaty.

Once exercise goes beyond 60 minutes, especially in hot weather or during consecutive training days, hydration becomes more important.

At that point, fluids and electrolytes are not just “nice to have.” They help your body keep working.

Electrolyte Supplements

Adjust your intake based on sweat loss, weather, and workout duration.

During exercise, drink in small, repeated amounts. A practical starting point is about 400–800 ml of fluid per hour, then adjust based on how much you sweat and how hot the environment is.

If you sweat heavily, choose a formula with more sodium. If your body weight drops noticeably after training, aim to replace about 1.25–1.5 times the fluid lost, with sodium included to help retain that fluid.

Tart Cherry Supplements

Tart cherry supplements are best used ahead of time as part of a recovery plan, not as a last-minute fix.

Start 3–7 days before a high-intensity training block or competition, continue on training days, and keep using them for 1–3 days afterward.

Dosage can follow the product label, ideally with a clear per-serving amount or standardized polyphenol content. For juice-based products, you can also use twice-daily approaches used in research as a reference.

If you have a sensitive stomach or need to control sugar intake, capsules or low-sugar options may be easier to use.

Recovery supplements are not about taking a large dose once and hoping for a quick fix.

Their value comes from using them moderately, consistently, and in the right context — based on your training intensity, sweat loss, environment, and body feedback.

For more individualized supplement references, you can use the CUDIS AI Coach and enter your goals and needs.

Disclaimer

This information is for general health education only and does not replace professional medical, registered dietitian, or sports nutrition advice. If you have chronic diseases, take medications, are pregnant, or follow a special diet, talk to a professional before using any supplements.

References

Wijering, L. A. J., Cotter, J. D., & Rehrer, N. J. (2023). A randomized, cross-over trial assessing effects of beverage sodium concentration on plasma sodium concentration and plasma volume during prolonged exercise in the heat. European Journal of Applied Physiology, 123(1), 81–89. https://doi.org/10.1007/s00421-022-05025-y

Yu, T., Dong, K., & Jin, L. (2024). Effect of tart cherry juice supplement on lower extremity strength recovery performance after periodization resisted sled-based training. Journal of Men’s Health, 20(1), 90–98. https://doi.org/10.22514/jomh.2024.012