I've been eating once a day since May last year, I eat only at dinner time and eat what I want and quite a lot. I don't get hungry until about 4pm, but then I go and do exercise. It's helped a lot with alertness, thinking is much clearer during the day, and I've always done a lot of sport and been quite slim, but I've really cut up since doing this (I'm 40 now, no fat around my middle). It's had no negative effect on my exercise or energy levels, so I'm just going to continue. I'm not completely strict with it, if someone asks me for breakfast or lunch then I'll go, but otherwise I've been pretty consistent with it.
I also often eat only one meal per day, have never been overweight, have always (until recently) been extremely active, and as I near my 50th year I am still not carrying around a lot of extra fat.
Once in awhile, maybe every month or two, I'll go three or four days with absolutely no food but plenty of water.
I've been in better physical condition, but my doctors are happy with my current BMI.
That said, I've always felt better when I ate less food more often.
Another thing is I get to save $$ by not buying lunch and breakfast. Plus I've not been sick (cold or flu or anything really) since starting this and I kind of wonder if my body has more chance to fight infections because it's not constantly processing food. Just a thought as I used to get colds/flu at least 3 times a year.
Everybody is different, "you are an experiment of one"...
A lot of material about fasting says that if you skip meals, you "cannot" eat back the calories you missed. This might be true in some individuals, but not for me. I have always been able to eat large quantities in one sitting ; I have been kicked out of all-you-can-eat buffets in my early 20s.
When I tried to eat once every 24 hours, I ended up eating huge meals and put on weight.
