After trying the foot and finger magnets for 2 weeks I found it difficult to keep the foot magnets on, and the finger magnets were simply not comfortable. Alex advertises a 90 day money back guarantee. It was 14 days after recieving the magnets that I returned them. Now 4 1/2 months later Alex himself has not returned my money, and proceeds to hang up on me when I call. Needless to say I WOULD NOT RECOMMEND DOING BUSINESS WITH ALEX CHIU !!!!!!!!!!!!!!