One of the big “things” in the keto world right now is intermittent fasting. Is it worth the hype?
Back in 2014, I had never heard of this concept. Keto wasn’t as mainstream then, and there wasn’t a lot of guidance available on how to do it, save from the foods to eat and not eat. The strange thing is, I was practicing intermittent fasting and didn’t even know it! On the keto diet, it’s sort of the natural progression of things.
Why do it intentionally? More fat burning! The longer you stay in a fasting state, the more the body liberates its own fat to use as fuel. It is also beneficial if you have a fatty liver, because it allows your liver to burn off its own fat as well.
Intermittent fasting will happen on its own if you have been on the keto diet for any length of time. Hunger slowly disappears, and you may find yourself skipping breakfast and even lunch. It helps to be aware of IF and to keep track of the time if you are wanting to maximize the fat you’ll burn.
There are a few different ways to do IF: 12/12 and 16/8. 12/12 is more of a “normal” three meal a day way of eating. You choose a time to be done with eating, let’s say 7pm, and you don’t eat again until 12 hours later at 7am. This way, you fast for 12 hours but have a 12 hour eating window. On 16/8, you fast for 16 hours, and have an 8 hour eating window, so if we keep our same 7pm example, you would fast until 11am.
I am currently practicing 16/8, although most days, I don’t end up eating for a full 20-22 hours! I don’t suggest you do this necessarily. It’s just that most days, I’m not hungry until dinner. I always stay within my 8 hour window however, and don’t eat past my own cut off time, even if I just eat the one meal.
Intrigued? Are you perhaps hesitant because of the fear of hunger? Here are some tips for you. First, don’t try intermittent fasting until you are on a well-established keto diet. In the early days of keto, you are naturally more hungry due to your body adjusting from glucose burning to fat burning, so if you try IF during this period, you most likely will cave and eat outside of your window.
Second, water, coffee, tea, etc. do not break your fast. Please don’t restrict water or your fluid of choice (provided it is sugar free of course). There are some keto advocates out there that say that bulletproof coffee (adding fats like coconut oil, butter, and heavy cream) will break your fast. On the flip side of that coin, there are also ketoers (including doctors) that say that adding fats will not break your fast as it does not trigger insulin. I happen to believe the latter, that fats will not break a fast. As such, I do enjoy coffee when I wake up with a small amount of heavy whipping cream in it. This seems to keep me going all day, the fat in the cream keeping me satiated until meal time. If you enjoy bulletproof coffee or coffee with just one kind of fat in it, I say go for it! This should help you make it during your fasting time. You should not use any sweeteners, however, as there is some evidence that even calorie free sweeteners will trigger insulin (the fat storing hormone). I seem to be losing weight thus far with my coffee regimen, but I am keeping a close eye out for any stalls and will re-evaluate if things seem to be slowing down.
In conclusion, the best way to begin intermittent fasting is simply to begin keto. As time goes on and you find yourself less hungry, try to have a “stopping” time for eating in the evenings, and plan to fast for 12, 16, or more hours! You will find that things happen quite organically, and fasting won’t be a challenge at all.