Isotonic drinks are beverages formulated to replace fluids, electrolytes, and carbohydrates lost during intense physical activity. They hydrate faster than water because they contain a balance of electrolytes and carbohydrates that closely match the body’s natural fluid composition. This similarity allows for quicker absorption in the intestines, effectively replenishing lost fluids and electrolytes more efficiently than plain water.
They are only needed for activities where you sweat a lot, e.g. during a hard workout, in very hot weather or when having diarrhoea.
Isotonic Vitamins
Ideal for a workout of 1-2h.
- 1 vitamin tablet (e.g. Prix Garantie Viatmins)
- 0.5l water
- 15-20g sugar (58 - 77kcal)
- a pinch of salt
If you use cold water, no additional cooling is needed.
Isotonic Tea
Ideal for a workout of max 2h.
- prepare a cup of tea
- dissolve 30 - 40g of sugar into it (116 - 155kcal)
- add a pinch of salt
- complete to a litre with water
- cool down in fridge and consume in 24h
You can replace tea + sugar with 0.5l of fruit juice and complete to a litre with water.