This all depends on how highly sensitive you might be to the presence of energy around you. Not every individual has the same experience when wearing one of our Pure Light Cuffs and receiving the energetic frequencies that are needed for protecting your body and mind from EMF. But the bottom line here is that you may not feel any immediate changes at first, or at all. This is due to the fact that people are all very different from one another and some have a higher sensitivity towards the energies that surround us. The condition of your health also plays a role and just because you don't feel any shift in your well-being doesn't mean it's not working. We recommend monitoring your health before you wear the bracelet, during, and after to get a more precise gauge on how well the Cuff has worked for you.