Not eating enough calories in a day..

thedarkwombat

She mentioned the last few months. When you are closer to your goal you require less calories. Going under that is not the best idea. So yes, in her case, I would advise against going under by too far.

In my case, weighing over 300 pounds, My daily goal is 2,000. I sometimes have days of 1600 or 1700 calories.