The right answer to this question all depends on the duration and intensity of the physical activity. With short sessions water will be sufficient, but when physical activities go beyond an hour an electrolyte drink is recommended.
Alternatively if you consumed a meal that contains a high percentage of carbohydrates up to 4 hours before physical activity water could be sufficient. However, if you did not eat a proper meal a sports drink such as SOS Hydrate will be advisable.
