The Wilderness Athlete's Energy & Focus products are amazing--especially paired with the company's Hydrate & Recover. The flavors are good and give you that refreshing taste and feeling. I use them both a lot when working out, hunting, or backpacking. They help out a lot with all the vitamins, minerals, and a little bit of caffeine. They really help keep that tired brain fog away, give mental clarity, and provide a nice little bump of energy. Just be careful not to leave it in something like a Nalgene bottle in warm weather... It will ferment and spoil.