I considered myself splurging and still came in under my "BMR"…so what is going on? Why is my BMR so much lower? Didn't exercise yesterday work got in the way. Will exercise today. Sometimes I wonder if I am better off doing cardio (which I hate) or weight lifting (which I love). Not sure about the benefits of either. I know when you weight lift, you increase your muscle mass and, thereby, increasing your bodies ability to burn calories but you do not burn too many calories per se during the exercise. But Cardio, burns calories quickly but does little for your muscle mass. Any suggestions?