Energy Drink constitute of,
WATER+ELECTROLYTES+CARBOHYDRATES
RATHER THAN BUYING EXPENSIVE SPORTS DRINKS MAKE YOUR OWN
SIMPLE FORMULA SHOULD BE APPLIED
6-8% CARBOHYDRATES ie sugar/glucose
3-4% electrolytes i.e salt.
Lemonade is a great sports drink.
In a glass of water,
1 tsp of sugar
1 tsp salt
Squeeze half a lemon
Serve
You could also replace water with coconut water.