Okay, so I have been gradually lowering my calorie intake. This week my plan was to get about 1300 calories a day. Over the past 2 days, I ate a bit extra (and also started calculating on fitday.com which seems to over-estimate)... but anyway, these past two days, I've gotten a bit over 1400 calories and I feel a lot better than I was before. So the question is, how can I accurately estimate my caloric needs? I used this which told me that my BMR is 1395.8. So does that mean that I have been eating to little? Is that why I feel so much better today? Should I slightly increase my caloric intake? Should I be getting at least my BMR worth of calories? Help, please!