I wanted to get the trimmer becasue it (along with "sweet sweat") helps heat up the area around the waist - which penetrates to the deeper "fat" cells - I am trying to use it when I do Spin Calls and Core Yoga and am seeing results -- it is the combination of a good work out - the trimmer an the sweet sweat that seem to be more effective than having nothing around the waist -- so far - I am very pleased with my purchase - time will tell regarding resutls.