Sports Drinks vs. Water – What’s Best For Teen Athletes? | YSN
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Sports Drinks vs. Water – What’s Best For Teen Athletes?

How much water should children drink when playing sport? What about teenagers – how much do teenage athletes need to hydrate to keep their bodies in peak condition? Amidst the energy, sweat, and passion on the field, it's essential for young athletes to maintain optimal hydration. But with a myriad of options available, from isotonic sports drinks to good old water, what's the ideal choice? What is actually better for us, sports drinks or water?

Join us as we delve deeper into the age-old debate: sports drinks vs. water. By understanding the science and needs of young bodies in motion, parents and coaches can ensure that their budding sports stars stay adequately hydrated and perform at their best.

Staying Hydrated

During exercise, your body loses water and minerals, called electrolytes, through sweat. If you sweat too much, without drinking to replace the water lost, you will become dehydrated. You should aim to drink at least 6-8 glasses of water a day, and drink more often when exercising [1].


Dehydration can cause a number of effects on our body and athletic performance [2, 3, 4]:

  • Headaches
  • Tiredness
  • Dizziness
  • Dry mouth, lips and eyes
  • Increases how hard you think the exercise is
  • Decreased amount of sweat – makes it harder to cool yourself down
  • Becoming tired more quickly
  • Can lead to heat illness which can cause cramps, exhaustion and heat stroke

Sports Drinks

There have been many sports drink created that are aimed at athletes. They contain water, for hydration, as well as sugar, to provide energy for your muscles. They also contain electrolytes, to replace the electrolytes that your body loses when you sweat. These ingredients are combined at specific levels to help provide the body with exactly what it needs [5]. There are 3 types of sports drinks, based on their levels of each ingredient:

  • Isotonic – contains similar levels of salt and sugar as in the blood (e.g., Powerade, Gatorade and Lucozade Sport)
  • Hypertonic – contains higher levels of salt and sugar than in the blood (e.g., Lucozade Energy, Pepsi and orange juice)
  • Hypotonic – contains lower levels of salt and sugar than in the blood (e.g., Powerade Zero, milk and unsweetened tea)

Isotonic and hypertonic drinks are used to provide the body with sugar. Isotonic drinks are most effective when used in short, high intensity workouts, whereas hypertonic drinks are used in longer training sessions and as a recovery drink. Hypotonic drinks are used for quick rehydration, with less of a focus on providing energy through sugar. They should be used for shorter workouts, hydration before a workout or any time you need to drink to rehydrate in a short period of time [6, 7].

What's best? 

Both water and sports drinks have been found to be equally good at hydrating our bodies [8]. However, sports drinks may be a better choice for a training session as they provide us with extra energy to keep on going and electrolytes to replace the ones that we lose through sweat.

There are also other options, such as orange juice and milk, that have been found to be even better at hydrating us. These are good options to incorporate into your daily fluid intake to make sure that you are meeting your daily requirements [8].

DIY sports drinks? 

Sports drinks can be expensive, but you can make your own at home using just fruit squash, water and salt.

To make a hypotonic sports drink, combine:

  • 100 ml fruit squash
  • 900 ml water
  • Pinch of salt

To make an isotonic sports drink, combine:

  • 200 ml fruit squash
  • 800 ml water
  • Pinch of salt

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Speak to a qualified sports nutritionist:

Every young athlete is unique, and individual nutritional needs may vary. Consider seeking guidance from a nutritionistregistered dietitian or healthcare professional experienced in sports nutrition. They can provide personalised advice tailored to your child's specific needs. Youth Sport Nutrition offer a tailored service with professional nutritionists online, at a time that works for you, and a very competitive price, find out more. Such as Ellen, who's offering some free tips below:


Libby Grimshaw

BSc Sport, Exercise & Nutrition Student  

Disclaimer: This article is intended to provide general information about nutrition for youth athletes and is not meant to replace professional dietary advice or individual nutritional counselling. Every child's nutritional needs can vary due to factors such as age, size, physical activity level, and medical conditions. We strongly recommend consulting with a registered dietitian or a healthcare provider before making changes to your child's diet, such as adding food powders. YSN and the author of this article do not take responsibility for any possible consequences from any treatment, procedure, dietary modification, action, or application of medication which results from reading or following the information contained in this article.





[4] NOAKES, T. D. (2007). Does dehydration impair exercise performance?. Medicine and science in sports and exercise39(8), 1209-1217. Accessed at:

[5] Maughan, R. J., & Murray, R. (Eds.). (2000). Sports drinks: basic science and practical aspects. CRC Press.



[8] Maughan, R. J., Watson, P., Cordery, P. A., Walsh, N. P., Oliver, S. J., Dolci, A., ... & Galloway, S. D. (2016). A randomized trial to assess the potential of different beverages to affect hydration status: development of a beverage hydration index. The American journal of clinical nutrition103(3), 717-723. 

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