I was introduced to Energy by Science. I bought the energy and sleep products. I was skeptical at first since I have tried vitamins before thinking that would help and it never did. I was relying on energy drinks and coffee, which gave me heart burn. The first day took the energy product, I felt great. I didn?t have that surge, but I had constant energy. There was no crash and I wasn?t spending all kinds of money on energy drinks and coffee daily. Before bed I took the sleep product. It was nice since it didn?t knock me out, but I fell asleep with ease though. When I woke up I felt refreshed. I couldn?t remember the last time I felt so refreshed. I highly recommend this product. It has been years since I felt this energized and refreshed.