How accurate do you think these hand help monitors are that tell you your BMI and fat %. Its suppose to measure like current thro your body and give you an accurate reading but i dont really know how accurate it is. I own an OMRON HBF-306CN anyone familiar with it. I mean im not looking for pin point accuracy but how close is it or what does it base its numbers on. I mean im 5'8" weigh 214 and still working on my body but im not in super horrible shape (i need work and need to lean up!!) but when i think obese i think eddie murphy in nutty professor and this thing says i'm obese (LOLOL) cuz my BMI is 32.7 How does this contraption know how my body is framed?