Make sure you drink enough water. During workouts you want to make sure you are hydrated.
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Drink about 15-20 ounces (a gulp is about an ounce) a few hours prior to working out, 8 ounces every 15 minutes during your workout, and after your workout drink 16-20 ounces for every pound you lost while working out. This may mean you need to weigh yourself prior to working out and then again right after. Plain water is good enough.
Sports drinks are not necessary for workouts under an hour. IF you are working out longer than an hour replacing your electrolytes will be important. Here sugar free/low calorie sports drinks or Coconut Water are a great option. Careful on the sports drinks as they usually contain sugar, artificial flavors, and fake colors.