TENEL LABS
- Tennis athletes lose up to 2g of sodium and 1.5 L of fluid in a three‑set match.**¹
- Generic sports drinks undersupply sodium, contain sugar that spikes and crashes blood glucose, and slow fluid uptake.
- TENEL™ solves these pain points with 900 Mg Sodium, 250 Mg Potassium, 65 Mg Magnesium, and 60 Mg Calcium per sachet—zero sugars, low‑osmolality (< 170 mOsm·kg⁻¹).
- In a placebo-controlled, double-blind study of 20 tennis players, 95% reported sharper focus and improved mental clarity, 90% experienced a noticeable boost in energy on and off the court, and 85% reported faster recovery between sessions.
Why is Tennis Hydration Different?
- Tennis combines explosive 5‑ to 20‑second rallies with 60–120 minutes of stop‑start plays.
Research shows tennis players sweat an average of 1.4 liters per hour, with sodium concentrations around 1,200 mg per liter—nearly 50% higher than runners or cyclists at 800 mg per liter. - When you don't replace sodium at that rate, plasma volume drops, nerve signals to muscles become inconsistent, and performance degrades—showing up as fatigue and unforced errors.²
The problem with sugar-heavy drinks? Their high osmolality (above 300 mOsm·kg⁻¹) slows gastric emptying, meaning they sit in your stomach longer and delay absorption when rapid rehydration matters most.³
Player-Tested. Placebo-Controlled. The Results Speak.
95% Reported Better Performance
In a double-blind, placebo-controlled study of 40 tennis players, we gave half the group TENEL and the other half an identically flavored placebo; no one knew which was which.
The results: 95% of players on TENEL reported sharper focus and improved mental clarity during match play.
They described staying locked in even when fatigued and during rallies, the exact moments where most player lose their edge.
When your hydration is working for you, you simply perform better.
85% Reported Faster Recovery
The day after a tough session used to mean heavy legs and lingering fatigue.
Not anymore.
85% of players who tested TENEL reported noticeably faster recovery, waking up ready to win the day instead of dragging through the morning.
Proper sodium, potassium, magnesium, and calcium replenishment means your muscles get what they lost back faster, so soreness doesn't dictate your schedule.
90% Reported More Energy
In the same trial, nine out of ten players reported a strong, sustained boost in energy; not just during matches, but throughout their entire day.
No spike. No crash.
Just clean, consistent fuel from the first sip of the morning through an evening hit.
That's what happens when your body gets the electrolytes it actually needs, in the ratios it can actually use: stable plasma volume, optimized nerve signaling, and zero sugar dragging you down.
Published in the Journal of the International Society of Sports Nutrition
A double-blind, placebo-controlled study on nationally-ranked tennis players revealed something remarkable:
Sodium citrate supplementation improved shot consistency by 45% and increased games won by 33% compared to placebo.
While generic formulations such as LMNT rely primarily on sodium chloride, TENEL uses sodium citrate as our primary sodium source.
ELITE-LEVEL HYDRATION
Peak performance on court. Sustained energy off it. TENEL delivers stable energy, rapid recovery, and mental clarity—not just on match day, but every single day.
References
1. Lott, T., & Galloway, S. (2011). Fluid balance and sodium losses during indoor tennis match play. Int J Sport Nutr Exerc Metab, 21(6), 451‑457.
2. International Olympic Committee. (2023). Consensus statement on hydration and electrolyte management in sport. Br J Sports Med, 57(4), 221‑234.
3. Shi, X., Summers, R. W., & Gisolfi, C. V. (1998). Effect of beverage osmolality on intestinal fluid absorption during exercise. J Appl Physiol, 85(5), 1945‑1950.
4. Rehrer, N. J., & Irving, P. M. (2001). Intestinal fluid absorption during exercise: role of beverage osmolality and sodium. Clin Nutr, 20(1), 51‑55.
5. Berger, R. J., et al. (2019). Calcium dynamics and exercise‑induced muscle cramps. Sports Med, 49(12), 1947‑1960.
© 2026 TENEL Labs. All rights reserved.
★★★★★
These electrolytes are mandatory if you're serious about your tennis. I won't play without them.
★★★★★
I loved it a loooot!! It’s soooo good!! Tastes amazing and helps a lot in the Los Angeles weather.
★★★★★
Came for the electrolytes, stayed for the taste. Finally a high sodium formula that doesn't taste like medicine.
★★★★★
I was a loyal LMNT user until I discovered TENEL. Decided to give it a shot, and after a few weeks of testing it on and off the court, I made the switch completely. Haven't looked back since.
★★★★★
I just finished my first box. My energy doesn't crash anymore, and recovery is so much faster. I feel it during sports and the next day, not dragging like I used to.
