The main reason I bought this device was to basically see if this actually worked or didn't Out of the 15 times I've used the product and surprisingly it does work. This morning I was super dead did not want to get out of bed. I used the energy strip first thing while I was tossing and turning in bed and set the device to the highest setting and at times it will feel uncomfortable from the tingling but it did wake me up. I've used this device on my lunch break at work and it did give me a kick for the rest of work day.It won't help with ADHD or any cognitive brain functions but it will give you energy and good energy that your body doesn't have to ingest and you can use this device as much as you want and I felt it lasted a while without any crash. I'm going to continue using this device. I'm giving the product 5 stars because it did work for me. Welcome to the future! Give it try!