I was initially reserved in my expectations of the product but after only wearing it for barely week now I am totally converted. I am about to buy another to wear on my other wrist as I suffer from poor circulation and the difference between my two hands is marked. As for the sensation I had within the first ten minutes of wearing the product I would love to speak with someone who could explain how it made me feel. I felt something I can only describe as a high. Crazy I know but I wouldnt be buying another so soon if this wasn't true. Everyone should have one on the national health!. Awesome. I surfed the other day and just felt, better. Crazy like I say but true. Perhaps it affects some more than others I don't know but I love what it's doing for me.