"They" say that Lent isn't about losing weight. I agree.
However, if you are the sort of person who loves to eat just for the love of eating (as I do), and you are guilty of such eating perhaps too often (as I am), and you focus many of your Lenten sacrifices around curtailing such behavior (as I did), then it is likely that you will lose weight during Lent (as I did).
And that is fine.
However, now that Easter is here, such people (like me) may need to be reminded that the Easter feast is not intended to be 50 days of gluttony, either. At some point (like right now), the excessive consumption of chocolate needs to stop. Did I not just spend 40 days learning that I do not need butter to be happy?
A few weeks ago, my pastor suggested that every meal every day is an opportunity for some small sacrifice: skipping sugar in the coffee, for example. This man is full of great ideas. He did not say that we are required to abstain from sacrifices during the Easter Octave (as many people seem to be insisting in this post last year, so don't even bother leaving comments to such effect in the combox - I won't listen to you).
Just like during Lent, sacrifices involving food during other times of the year are not about weight loss or weight control. They are ways to remind ourselves that food will not make us happy if our souls are unhappy. They help us exercise detachment of earthly things.
And I, for one, need constant practice in such detachment.