Help...I have a conflict with my HRM and my calculated MBR

BodyBug and Body Media Fit devices are meant to be worn all day and do a great job of determining your daily output and BMR.

HRMs determine when your heart rate is raised above resting and give you a good idea of the caloric burn based on the information you put in and an estimated BMR---it is basically how MFP estimates it--you are just given more accurate exercise intensity and duration info with the HRM