No they don't work but they might have a philological effect on someone who might believe it actually works. If you think this wrist band will make you stronger, faster and smarter then it probably will. Though the truth of the matter is it does not work.
All you naa sayer's that think it's in your head, tell me how a 6 mo. old baby who couldn't stand up holding onto a table stood all by herself without any assistance for 15 full seconds? My 3 yr. niece was unable to balance on 1 foot without it, with it can all day long! Ask Shaquille, he swears by it! Personally know professional bull Riders & professional hunter that say wont go without em'