A friend has asked me to become a distibutor for Ecoflow, a range of 'reverse polarity' magnetic collar or cuff devices claimed to ease pain in humans and animals, to reduce fuel consumption in petrol & diesel vehicles, and to reduce limescale.
I am deeply sceptical, being a fan of 'Return to the Forbidden Planet' but I would like to find out whether there is any evidence one way or the other as whether these products work.