I like V8 juice or Motts Garden Cocktail after class when i get home. Both are very high in sodium but after class it works good for replacement. Coconut water is way too expensive here. Just eating sensible meals of a balanced diet will replace most everything you lost in class without having to spend money on ‘supplements’.
All you need to do to lose weight is burn more calories than you take in. It has zero to do with carbs, or fat, or sugar, or refined, or raw. Raw and unrefined will give you better nutrients to be healthier, but for weight loss its simply calories in and calories out. You can lose weight on a diet of white bread covered in chocolate and deep fried as long as you worked out more than the calorie intake 🙂