I didn't notice a huge difference in using Mojo while working -- coffee seemed to be a better trick for an afternoon pick-me-up. However, when staying up later or going out, Mojo definitely gave me a subtle bit of extra energy that kept me away and getting through activities. The flavor of the gummies is delicious (and made me buy similar candy so I didn't eat too many at once). Maybe the higher dose gummies are more effective to use while working. They certainly taste and feel better than an energy drink but lack the actual extra energy portion for working or exercising.