When I skip breakfast or lunch (usually out of near necessity), I MORE than make up for it at the next meal because I'm HUNGRY! I consume fewer calories (and generally eat healthier) if I ate 3 good meals a day. Just me.
IMO, "fasting" is stopping ANYTHING that seems to be taking too much of our energy, attention, focus that could be spent on better spiritual things. EXAMPLE: Years ago, I would spend HOURS on facebook. I mean HOURS. I was still in school at the time and realized this was ROBBING me of time/energy I should be spending on school. And I no longer seemed to have time for much personal devotion or Bible reading or prayer, those got rushed to I could sign on. So, one Lent, I gave up facebook. It was only for 40 days and I was sure I could do that for that length of time. And I replaced that time (well, some of it) with Bible reading, devotions, prayer .... and studies. I suffered from withdrawals for awhile, LOL, but by the end of the 40 days - I not only didn't miss it but found I really enjoyed the things I replaced it with - and benefited far more. I ended up cancelled my facebook page (I don't have one..... I may be the only "Twenty Something" person on the planet without a facebook page!! I tell everyone I don't have one and so they need to email me invites and stuff like that. I think that's what fasting is..... and what it CAN do.
- Josiah