Skip to Content

8 Things To Expect In Your First Week Intermittent Fasting

I’ve been fasting off and on for a very long time now and sing its praises from the rooftops because to date I’ve lost over 40 pounds and have kept it off with little effort.

At my highest weight of 196 pounds, I tried everything to lose weight – to no avail.

Only when I finally pushed through fear and doubt and really focused on intermittent fasting did I start to see real change that I could actually maintain!

Today, I weigh less than I have in at least ten years!  


me in my wedding dress before and after weight loss


But it all started with the very first week.

If you’re considering giving intermittent fasting a try and are curious as to what you might experience in the earliest days of your journey, this piece is for you.

Here are 8 things to expect in your very first week intermittent fasting.

*This post contains affiliate links


Your First Week Intermittent Fasting

first week intermittent fasting

While intermittent fasting is probably one of the most straightforward approaches to dieting and weight loss you can take, you should still do your research. Make sure you know what you’re doing. 

I put together a super-thorough guide to intermittent fasting that contains everything you need to know before you get started. Check it out before you begin!


1- Confusion On What To Eat

Traditional Central American caribbean cuban colombian food. Rice with black beans, tostones, fried green bananas plantains with guacamole sauce. Top view, flat lay

One of the best things about fasting is that you can have great success by altering when you eat – rather than what you eat. 

Yet, things can still get downright confusing in those early days. 

Afterall, you want the biggest chance of success, so you want to do it right… right? 

While you can lose weight with fasting still eating the same foods you’re used to just in lesser quantities, you will reach a point where it’s not enough. 

Your body will get used to this new normal, you’ll plateau, then you’ll wind up quitting. 

No bueno!

If you know that you’d like to begin improving your diet right away but are confused about where to start, check out the delicious, low-calorie, weight-loss-promoting meal plans I’ve created for you! 

You’ll have so much fun creating incredible meals that you prefer over the other stuff that’s been making you fat, sick, and unhappy with your body all these years and you’ll be on the perfect track to success straight away!


1- Cautious Optimism

intermittent fasting schedules

First, you might be extremely optimistic – yet cautious at the same time. At least I was.

Prior to trying fasting, I’d seen everyone’s amazing before and after pictures. I saw how people were able to eat great meals that really satisfied them. And I saw how happy and confident everyone was.

I wanted the same for myself!

While I thought that if they could do it, I could do it too, part of me was still a little scared.

I don’t think I’d ever intentionally missed a meal in my life! How would I miss at least one every single day?

But you know what? It wasn’t that bad. At least not all that bad!

Things did get better over time.

So, if this is one of your fears, that maybe skipping meals is going to be hard? I won’t lie, it might be.

At least at first.

But it does get better.

Which brings me to point #2…


2- Extreme Hunger At The Start Of The Week

too tired to exercise

So yeah, at times during the very first week you might be very hungry.

Think about it like this… if your body is used to a constant stream of food from when you wake up in the morning to when you go to sleep at night, intermittent fasting is going to confuse your system.

But if you stick with it past the first few days or so, your body will get used to it! Mine did!

And what a sweet relief it was!

Over time, I came to realize that lots of what I thought was “hunger” was one of two things.

It was either dehydration/thirst (and I needed to drink more water), or it was something I still struggle with to this day: emotional eating.

The good news, though, is that the extreme hunger will pass.

In fact, sometimes you will…


3- Forget To Eat

intermittent fasting one month transformation

Yes! Imagine that! Sometimes you’ll actually forget to eat.

When this happened to me for the first time, I was shocked and amazed because believe me, forgetting to eat was NEVER a thing before. NEVER!

Starting with a 16-hour fast was intimidating, but by the time the first week was said and done I’d even had a 20-hour fast and an 18-hour fast thrown into the mix.

And I was feeling so much better, both in my skin and emotionally.

It was a new sense of…


4- Confidence & Strength

burpee challenge results

Pushing past that initial hunger on those days when it felt hard made me feel so good! Because though I can’t promise you it’ll be easy to push through, once you do? You start to realize that feeling a little hungry for an hour or two until you hit your feeding window just isn’t all that bad.

If you’ve never really succeeded at self-constraint or restriction before when it comes to food, you start to feel confident and strong.

Like you can meet your goals, and the proof is in the pudding – you JUST did!


5-The Desire To Exercise

intermittent fasting one year results photos

Next, you may also feel a new and sudden desire to exercise!

I think it comes with feeling like you’re doing something good for your body. Like you’re finally in control, you know you’re not going to eat until 12pm and you’re making it happen.

You’re drinking more water, you’re on top of your game, so what else can you do for your body?

Maybe you don’t suddenly want to lift weights like you’re training for the Olympics or anything. 

But if you want to lift weights at least just a little, I recommend these adjustable dumbells. I use them a few times a week and they are a convenient way to get some workouts in.

Other than that, I can recommendwalking a little more (even in place)! Do a little yoga. Spend some of the time that you aren’t eating, pushing the needle on the scale even more to the left in any little way you can.


6- Annoyed At The Skeptics

intermittent fasting not working

Since intermittent fasting has grown so much in popularity recently, this may or may not be so much of a thing. But oh my gosh…

When I first started intermittent fasting I got so many people talking mess about what I was doing!

They told me it was unhealthy, that I’d go into starvation mode and wither away. That it was dangerous. That it was unsustainable. And it just made me feel like crap. But you know what?


It was super annoying though.

So, you might get annoyed by people who are skeptical of your new journey.

But you know what you do with that? You use it as fuel to meet your goal. So, when they ask “sis… why are you so slim and hot, and why are you glowing so much? What’s your secret”?

You tell ‘em “starvation mode”.



7- Hope & Belief

intermittent fasting 1 year

In the beginning you may feel a little gun shy about the whole thing. Then when you first start to feel that overwhelming sense of hunger, you may feel skeptical. BUT let me tell you… once you push past the ickiest parts and start to find your groove? It’s like the lightbulb goes off inside your head and you finally feel a sense of hope and belief that it’s your TURN.

Your success story is just around the corner.

I don’t know about you, but after struggling with my weight for so long I think some part of my belief in being able to change just kinda died.

Like, I’d start these diets and workout programs and go strong for a minute, but I knew that it wasn’t sustainable. That I hated eliminating entire food groups. Or I couldn’t fathom the idea of never enjoying some of my favorite foods again.

But intermittent fasting? Though it isn’t a magic trick and there are still rules to follow, it’s the most realistic and sustainable way of eating that I’ve personally ever seen.

And within my first week I had the hope and belief that I just might make it.

You can too!


8- Joy & Excitement By The End Of The Week

ketogenic diet lose weight

Finally, results may vary so I don’t want you to feel discouraged if you don’t see results in your first week. It just may take your body a little longer to adapt. Or you may need to make a few tweaks to your approach.

But for many people, weight loss in the first week is really a thing!

In my case, I lost 5 pounds and quite a few inches in my first week and it only added to the joy and excitement I felt brewing already!

Intermittent fasting works, if you work it!


Want To Lose Weight REALLY Fast?

smoothie diet

With intermittent fasting, you generally don’t have to alter your diet too much in the beginning to see some weight loss. But, a) sometimes you want BIG weight lost and b) you want it FAST!

If you need to lose weight really fast and jumpstart your fat loss process, try the smoothie diet!  

It’s a weight loss program that includes all the tools you need to lose weight, from a simple daily plan, tons of quick, easy, delicious smoothie recipes, and step-by-step instructions to walk you through the entire process. 

It’s a three-week program but honestly, you will start to lose weight in just two or three days.

After one week you’ll be super happy. And if you make it to two weeks your mind will be completely blown!

It works so well you’ll think it’s magic. But it’s not. It’s real weight loss and fat loss that will give you the confidence boost you need.

I used it when I fell off track once and fat started melting off right away

Check out the smoothie diet right now!

Good luck! 



P.S. If you’re wanting to try it and see it at a discount, buy it now! When I first saw it at $47 I hesitated, then the price went up and I had to pay full price!  Don’t lose out and have to pay more than you need to! (If you see it at $47 or below it’s a good deal — get it!) So worth it!