Nuun Training

Frequently Asked Questions

• What’s the difference between Nuun Sport, Nuun Performance, and Nuun Endurance?

  Nuun Sport tablets are a low-calorie, low-sugar effervescent option (about 15 kcal, 4 g carbs, ~300 mg sodium per 1 tablet/16 oz) for everyday training and sweat sessions. Nuun Performance powder is formulated for harder efforts with a higher carb content (about 30 kcal and 8 g carbs per half-scoop in 8 oz; ~190 mg sodium) and a low osmolality (~250 mOsm) for faster absorption. Nuun Endurance prioritizes higher carb-to-water ratios and elevated electrolytes for efforts longer than ~90 minutes, so it’s chosen when sustained fuel and higher sodium are needed.
• How should I use Nuun tablets and powders during a workout?

  Drop one Nuun Sport tablet into 16 oz (about 500 mL) of water and sip throughout your session; Performance mixes use a half-scoop (9 g) in ~8 oz for a more concentrated carb/electrolyte drink. Start sipping before you feel depleted, take regular small doses during exercise, and increase servings or switch to Performance/Endurance for events lasting over 90 minutes. Adjust dilution and frequency to personal sweat rate and stomach tolerance.
• Are Nuun products suitable for low-sugar or keto diets?

  Nuun Sport is very low in sugar (about 1 g sugar per tablet) and low in calories, making it compatible with low-carb or keto approaches for hydration. Nuun Performance and Endurance contain more carbohydrates by design to provide fuel during longer efforts, so they’re better for endurance needs than strict keto use. Always check the flavor label for exact carbs and serving sizes before use.
• How much caffeine is in Nuun Energy and which Nuun products have caffeine options?

  Nuun Energy contains roughly 80 mg of caffeine per serving along with B vitamins, and some Nuun Sport flavors offer an optional ~40 mg caffeine from green tea. Caffeinated flavors are intended for pre- or mid-workout use — monitor your total caffeine intake and choose non-caffeinated varieties (Sport, Performance, Endurance) if you’re sensitive or consuming other caffeine sources.
• How do I choose between Nuun Recover, Nuun Rest, and Nuun Immunity/Vitamins?

  Pick Nuun Recover after tough sessions when you want post-workout support—formulations include BCAAs and glutamine to aid recovery and muscle rebuilding in the 30–60 minute window post-exercise. Use Nuun Rest at bedtime for magnesium and tart cherry–based ingredients aimed at sleep support, and Nuun Immunity/Vitamins as a daily supplement for antioxidant and micronutrient support. Match the product to your specific goal (recovery, sleep, daily wellness) and follow the label directions for timing and serving.