Main resource for Intermittent Fasting (IF) has been at LeanGains and more specifically this post.
Most of the information on IF has been solely on a glycogenic diet, one that is predominantly carbohydrate orientated. But I've decided to try on a high fat, lowest carb diet; ketogenic Intermittent Fasting (kIF).
So far..
Now this is only my second day and as I write this I have gone 18 hours without eating anything - only drinking water. And amazingly I'm not hungry. In the morning of the first day I was getting a tad hungry which increased as time went on (body wanting me to bring forward my 1PM meal). But today, even though my last meal was 5PM the previous day (was 8PM the day before that), I'm still completely satisfied.
Unexpected side affects so far have been, more energy, waking up brighter and earlier although also getting tired more quickly during the evening (but that didn't last long), drinking more water. I went to bed at 2AM and instead of getting annoyed at my alarm at 9:30AM, I woke up naturally and rested at 8AM.. what's with that.
I haven't had any cream dreams (weird vivid dreams induced by dairy products) either, but that's to be expected as I used to have something like cheese or jelly & cream an hour or so before bed. Maybe that's why I'm more rested when I wake up, I'm in a deeper sleep more often? I'll use the Sleep Cycle iPhone app tonight and compare with before.
I have to tell you though, being in ketosis and not having serotonin-highs and insulin-lows really helps with hunger. When in keto your hunger is suppressed to a certain extent anyway (until your body actually tells you, you need food) so combined with IF it's so easy. This somethingawful thread details how hungry you will get without eating, but again this is based on a carbohydrate diet. I'm just not getting it on my ketogenic diet.
Whats next?
Well, it's only been 2 days. My body fat is around 13%, weight is 61Kg. I'm aiming for about 8-9% by the challenge so that's going to be a lot of timing, carbohydrate and calorie tracking, fasted resistance training and BCAA intake and more anabolic inducing foods (beef etc).
I will, however, post again in a week or so detailing any other effects kIF has had and my fat loss so far.