Reply #43: That's probably because you were on a starvation diet.

[Gwendolyn]

Your intake was so low your body rebelled and went into hoarding mode, increasing its efficiency at latching on to every shred of fat. My guess is that your personal professional trainer explained that to you while switching you to a diet that was more reasonable yet was still in the energy deficit range. What you describe happens to a lot of people who are impatient, or unaware of how dangerous or inefficient very low calorie diets are. Still doesn't change the validity of the other person's post though.