Home made sports drinks

During a few recent workouts, in particular runs, I've had a few sensations of light headedness.
Looking back I know I didn't hydrate enough before, during and after the runs.
I've looked a few times at making my own sports drinks.
There are a few out there on the web, but it's taken me a while to find drinks where you add salt.
I am prone to muscle cramps, (after exercise) so salt is a necessity for me.

Anyway, this week I made my own sports drink and suffered no ill effects at all and actually felt good during and after exercise. The recipe for the drink is:

• 1/2 cup orange juice
• 9 tbs. Sugar
• 3/8 tsp Salt
• Water to 2 litres

Nutrition Information (per 8 ounces):

• 14.4 grams carb (6.1%)
• 104 mg sodium
• 28.4 mg Potassium

(you could substitute 2 tbs. of lemon juice for the orange juice and it would come out the same - or at least close).