Quick, if you told anyone that you were fasting to lose weight, they would probably think:
a) You’re crazy
or
b) You’re crazy
It’s sad, but anytime you tell someone that you’re fasting, the only acceptable reasons for doing so are for medical or religious reasons. If you even mention the words “weight loss” and “fasting” in the sentence, then you’re in for a world of hurt.
But in my opinion, fasting for the sake of weight loss isn’t crazy. Not at all.
In fact, strategically fasting everyday for 16 or even 24 hours can provide a whole host of benefits over the conventional “eat breakfast and 6 meals per day” saying.

Basics of intermittent fasting
So what exactly is intermittent fasting (IF)?
Simply put, IF is the act alternating periods of fasting (not eating) and eating. While there is no official IF program, most programs range from 12-24 hours of fasting.
So why is Intermittent Fasting awesome?
Well lets see:
- You get to eat bigger meals
- You get more work done since you’re not eating as often
- You have more energy since you’re not bogged down by food
- You get to stick your middle finger at every single fitness guru who says eating every 2-3 hours is absolutely necessary for good health
I could go on and on.
Is IF unsafe?
In short, IF is safe.
However, just like everything else in life, if you overdo it and take it to the extreme, then it will become dangerous. If an intermittent fasting program tells you to fast for 16 hours, you shouldn’t disregard that and decide to fast for 100 hours.
As long as you don’t do anything crazy like that, then there’s really nothing dangerous about IF.
But won’t fasting make me fat?
I never really saw the logic in this statement, but since when the hell did not eating make you fat?
But anyways, many people have this ludicrous belief that fasting will make them fat. This belief originates from mainstream media where they constantly promote the fallacy that fasting will force your body hold onto its body fat and make it burn muscle instead which is just incredibly stupid.
Will IF make me lose muscle mass?
When it comes to fasting, another popular myth that people believe is that fasting will make you lose all your hard earned muscle mass. This is simply not true and as long as you perform of heavy resistance training 2-3 times per week, then you shouldn’t fear about losing any muscle mass.
If you need further proof, check out this research study. In it, scientists showed that even when people ate a super low calorie diet (800 calories per day), they were able to maintain all their muscle by lifting weights. The reason behind this is because the act of lifting weights sends a signal to your brain that you want to preserve all your muscle mass.
But don’t you need to eat more often to have more energy?
This is exactly what food companies thrive off of. They create all these products that target people who need a “quick energy boost” or a quick afternoon “pick me up”.
But in reality, these people probably don’t even need these products. They buy them because they fear that they’re suddenly going to crash and burn when in reality nothing is really going to happen.
If you just give your body a chance to experience what it’s like be without food every 2-3 hours you’ll realize that you’ll actually have more energy than ever.
Just give it a shot.
IF is just another way to eat
Even though I love IF and would NEVER go back to eating 6 times per day again, I have to admit, it’s just another tool. It’s another tool to help you lose/maintain weight.
Unlike most fitness professionals, I’m not going to tell you that it’s 100% necessary to do something. I’m not going to tell you that it’s absolutely mandatory to do IF because honestly, it’s not for everyone.
Some people just love to eat small meals every 2-3 hours, and if you’re one of those people, then that’s cool. I’m not gonna judge you.
But if intermittent fasting sounds good to you, then check out the 3 most popular IF programs below.
A look at various IF programs
Over the past couple of years, more and more fasting programs have come into the market. IF is slowly growing in popularity, but here are the 3 most popular forms of IF:
1) Eat Stop Eat
Eat Stop Eat was created by Brad Pilon is now arguably the most well known form of intermittent fasting. I’ve been using this program for the past 3 years, and if you read my blog often then you know that I absolutely love this program.

Eat Stop Eat requires you to fast for 24 hours (e.g. 7pm on Sunday till 7pm on Monday) 1-2 times per week. On the other 5-6 days of the week, your main goal is to simply eat normal (maintenance calories).
The whole goal of fasting 1-2 times per week is to let those days create a calorie deficit of 10-15%.
Important Eat Stop Eat notes:
- Even though you’re fasting for an entire 24 hours, this doesn’t mean you get a free pass to the all you can eat buffet. The main goal is to simply eat normal after each fast. Don’t over or under compensate for anything.
- Despite fasting for 24 hours, you still get to eat every single day. So for example, if you start a fast on Wednesday night and end it on Thursday night, that means you get to eat a meal on Thursday night. Awesome, huh?
- Eat Stop Eat is more of a lifestyle change than an actual diet since you’re only eating less for 1-2 days of the week.
You can red my review of Eat Stop Eat here.
2) Leangains

And now we have Leangains created by the oh so famous Martin Berkhan (seen above).
But unlike Eat Stop Eat, Leangains has a much larger focus on pre/post workout nutrition and macronutrients.
With Leangains, you’re fasting every single day. Men will fast for 16 hours and women will fast for 14 hours.
While many people have effectively used Leangains to lose weight, many people have also used it to effectively pack on muscle mass. But not only is this muscle mass, it’s lean muscle, meaning minimal fat gains hence the term “Lean” gains. This is achieved though calorie and macronutrient cycling. If you’re ever looking for a program that lets you pack on muscle with minimal amounts of fat, then this one’s for you.
There are a couple different variations on Leangains, but all every one has you taking 10 grams BCAA before workouts.
I don’t want to delve into the rest of the details but if you’re interested in the rest of the Leangains protocol you can read the Leangains guide here.
3) Warrior Diet

And lastly, we have the Warrior Diet created by Ori Hofmekler.
This form of fasting to lose weight isn’t as popular as the first two, but it was the first form of IF I tried and till this day, I still use it from time to time.
The Warrior Diet has you fasting for 20-24 hours every single day, so it’s similar to Eat Stop Eat in terms of the fasting length.
During your fasts you can still drink water and zero calorie drinks like tea, coffee, and diet soda.
But the main difference here is that you’re eating all your calories in 1 massive meal per day. The mainstream media will probably never promote this way of eating, but hey, it works.
I’ve done it in the past, and you really don’t feel hungry while fasting. Plus, every day is like a mini feast since you get to eat a crap ton of calories in one sitting.
4) Honorable mentions
Some other great intermittent fasting programs include:
- Intermittent Feast By Nate Miyaki
- Fast 5
So which program is best?
Whew, all this fasting talk has gotten me a little hot. And hopefully I’ve gotten you a little bit excited too, maybe even got your nipples hard.
But if you had to choose, which of the above 3 is the best intermittent fasting program.
Well… I don’t know.
It’s really a personal preference. I’m not going say that Eat Stop Eat is the absolute best IF program out there because it’s not. It’s one of the best, but it’s not the absolute best.
Some people don’t like to fast for 24 hours and that’s fine. In that case, you should try something more along the lines of Leangains.
And if someone likes to come home from work every day and just stuff their face with food, then the Warrior Diet is probably best for them.
In the end it all comes down to choosing a program that fits your lifestyle.
Fasting to lose weight = not crazy
Seriously guys, fasting is not as crazy as you think. You’re simply waiting longer between meals.
But to be able to effectively use intermittent fasting, you need to have an open mind.
You need to be able to let everything that you thought you knew about nutrition and dieting behind and be able to step into this new world of “not eating”.
But trust me, once you starting fasting, you’ll never want to go back.
Have you ever tried fasting to lose weight? Did you like it? Let me know in the comments below.
Don’t you find that when you fast, you binge eat after due to hunger prangs?
Surprisingly no. As strange as it sounds, after fasting for a while, your hunger seems to actually be blunted a bit. I know this sounds weird, but it’s actually harder to eat a ton of food after fasting.
You are absolutely right! i have been fasting for about 4 days now and when it’s time for me to eat, i notice now that i don’t eat as much as i used to, and surprisingly, i would have to save my little portion that i have made for leftovers.
No. I find that after a week or so of adjustment, I get hungry when I ate the day before. My body adjusts to my eating schedule. I eat in the evenings between 19:00 – 1:00 every day and I don’t get hungry until that time every day.
You should also mention the Fast-5 program. It’s a free booklet you can download on their site, you just fast 19 hours a day. I did it for about two weeks and was seeing great results, but I was weak to stress and started eating again, but I’m going to give it another go. I was finally starting to see a smaller belly (I never lost the 40 pounds I gained in pregnancy) after just a few days. Just like you said, you feel hungry, but your stomache shrinks when you don’t eat for a while, so no, you definetely don’t binge. I ate about 800 calories a day on Fast-5, MAX, and I felt plenty fed!
Hey Tenley,
Fast 5 is another good program, but I just wanted to mention the top 3 most popular programs without making this post too long. And you’re right, after fasting for a while, eating less food will actually make you feel full.
-Keith
i was wondered why fast 5 hadnt made to number1 position! i guess they dont market as much. i have tried all variations of IF and find that fast5 is the most flexible and fits into most peoples lifestyle without shocking your system. you can have lunch and dinner within 5 hour window, or breakfast and lunch, depending on your preference, you never feel deprived and just watch the fat melt off as long as you are not stuffing your face during your window
Fast 5 is a good one too. But I think ESE, leangains, and warrior diet are the most widely used IF diets so I just put those.
Hi I was just wondering if you could give me some advice.
I’m 5’1 small-framed female weighing 123lbs (155cm and 55.8kg) and I’ve been doing IF for 2 weeks (ESE), I do two 24HR fasts a week. I’ve been keeping my calories around 1000 a day (some days less, some days more – it evens out to about 1000). I might be getting less because I usually overestimate calories by adding 100-300 if I’m not too sure, or rounding up to the nearest 100 where there are nutrition labels.
Exercise is that 5/7 days a week I do bodyweight exercises and I walk my dog for more than an hour each morning.
SO I’m just wondering if this is okay to continue and for how long would be good?
Once I get rid of some more fat (lowest ‘goal’ weight is 100lbs, aiming to maintain 100-110lbs) I was thinking of upping calories by 100 each fortnight and finding my maintenance range.
Hey Jenny,
Are you eating 1000 calories on your fasting days as well?
For exercise, I would recommend you to cut down your bodyweight exercises to 3-4x per week, but you can keep walking your dog 🙂
Well sure, just keep on continuing what you’re doing if you’re losing weight at a reasonable rate. For maintaining your weight, increase your calories by 200 each day for 1 whole week and see if you’re gaining any weight. If you’re still losing weight, increase by 100 calories each week until your weight stabilizes.
Hope this helps
Thanks for your reply!
On fasting days I just have dinner and sometimes a snack as per normal, so it usually comes to about 500-700 on a fasting day. I find that once I eat dinner after a fast I get full up and don’t feel like eating for the rest of the night.
I’ll try out your advice of 200 a day increase once I start to maintain, I’ll also cut down my bodyweight exercises.
Thanks again!
Excellent overview on the different popular IF systems. I just started to fast and again and it actually becomes abut addictive after awhile ( which may not be a god thing).
I think for your article I tend to prefer somewhere in between ESE and the warrior diet. Lean gains just doesn’t seem that enjoyable and would fit into my lifestyle.
Thanks
Raymond
Thanks Raymond.
I really hate fasting and I’m glad to say I lose weight easy doing cardio. I respect it though. I did it a few times and I found it very challenging and I got moodswings because of it. Good luck…
Marcel, for some people, fasting really doesn’t fit their lifestyle and that’s fine. Do whatever works for you. Fasting is just another tool.
You have no idea how completely perfect this is for me. Being a student 6 meals a day is pretty impossible so i’m really looking forward to incorporating this into my routine.
Thanks.
Hey Andy,
I totally understand. I’m in college right now so it’s also really hard for me to eat 6x per day. I don’t know if I could ever go back to that way of eating again.
I still think you’re crazy, but I’m a freshman in college now and I look disgusting (thighs and lower belly especially) so I’m going to give the 24 hr starving thing a go. But I am currently one of those girls that go to the gym 2-3 times a week and run for like 20 minutes on a treadmill every time not knowing what else to do or how else to workout to LOSE MY FAT. Suggestions on how to work out with the 24hr fast thing in play?? thanks
Hey katherine,
As for working out, I would just stick with doing some weight lifting. You can still do cardio, but make sure you lift weights as well to preserve muscle mass.
For weight lifting, I would just stick with a few basic compound exercises, such as chest press, cable row, shoulder press, and squats. You can do each exercise for 3 sets of 7 reps. You can do this 3x per week.
Good luck. Hope this helps.
Amazing! Thanks for the tips! Greatly benefited from a form of the warrior method. I was a bit of a junk food addict. Fasting has COMPLETELY cured me of my addiction to processed foods as well as my tendency to overeat. It has taught me a lot about self control and the actual needs of my body, not just what I would crave. I have an amazing amount of energy, I have a renewed sense of mental clarity, and of course best of all, significant weight loss, after only a month. I highly recommend this.
ozzyK,
That’s awesome. The warrior diet was one the first types of IF I experimented with and it’s still one of my favorites. Just love how satisfying the meals are. Keep it up!
I’m interested in trying the Eat Stop Eat method of fasting first, and I’ve read recommendations of 5-10g of BCAA before your daily workout. How much BCAA do you recommend for women?
Melissa,
5-10 grams is about right for women pre-workout.
Hey I just wanted some clarification. I’m 5’10 and weigh 158lbs with an average build. I’m running and doing some calisthenics. I’m trying to cut my body fat down and maintain what muscle I have gained over the years from lifting. I’m going to try and combine your losing fat guide and the ESE program. So I would have to multiply my body weight, 158lbs, by 14 to get 2200 calories but I need to subtract 500 from that to create a deficit in order to lose weight. So on any given day I need to be eating 1700 calories. But then I wanted to add in the ESE program which would have me fasting two days per week on top of the calorie deficit.
So essentially will that work? also I saw something you wrote saying to multiply your weight by 12 so I was just wondering the correct number. And also is it safe/ efficient to do both?
Tom,
Yeah that plan would definitely work. Stick with 1700 calories a day and do ESE 2x a week.
First time poster with a question regarding Tom’s post and your reply. So are you saying he we need s to create a deficit twice? For example: maintenance 2000 – 500 AND fast as well? So 1500 + ESE or whatever fasting method works for me?
Hey Al,
The calorie deficit is mainly created by the ESE fasts. Once you do 2 ESE fasts, it’s not 100% necessary to eat in a deficit the other days.
Thanks for the clarification. I enjoy and agree with your ideas. Simple stuff.
Thanks Al!
I am 6 feet tall weigh 207 pounds. I have lost about 20 pounds so far and I am hitting a wall. I am trying to get down to 175 pounds. How many calories should I eat on a non fast day? I am thinking of trying the eat stop eat as that sounds like it the easiest to follow.
I usually play basketball 3 time a week and I try and lift weights the other 3 days.
Also can I drink diet soda while fasting for some energy and just to not be bored at my desk.
What weight lifting program do you recommend? I have a home gym, but no row machine etc.
Hey nate,
On the non fast days, you can simply eat at your maintenance calories if you do 2 ESE fasts per week. And yes, you can drink diet soda and anything else that has zero calories.
AS for weight lifting, just stick with a low rep high weight routine. Just pick 1 exercise per major bodypart(legs,back,chest,shoulders) and do 3 sets x 5 reps for each exercise. Do this 2-3x per week.
Hope this helps
Thanks for the reply. One more question. My maintenance level is around 2500 Cal’s if I did the calculation correctly. To lose weight now I eat 2000 calories a day. I have a hard time hitting that when eating good foods. With IF is it a problem on the non fasting days if I am only eating 1800 to 2000 calories a day? Also should I eat more to compensate for days that I work out?
Thanks fo the help
It’s fine if you eat 1800-2000 calories on non fasting days. That will probably accelerate your weight loss even more. As for compensating on workout days, I wouldn’t recommend it unless you really have low energy in the gym.
hey,i have a doubt.can I workout on these fasting days??thanks in advace
Yes, absolutely nothing wrong with training while fasting
I attempted my first 24 hr fast beginning last night ending earlier tonight, however I did allow myself 2 cups of black coffee. Is this ok? How about green tea?
ya plain black coffee or green tea is totally fine.
Hello! I am a 5’4 22 year old female who has run cross country and long distance track for the last 8 years. This year in April I injured my foot, and I am in a boot and on crutches for the next 3 to 9 months depending on how quickly my foot heals. I’ve gained some weight since I am currently not allowed to do any form of cardio. I am, however, allowed to do weights sitting down ( I typically do about three hour long sessions of p90x a week). I just started the Warrior Diet this week and it’s going very well. I guess I just wanted to ask if you think this diet will be effective for me just doing weights and no cardio until I’m better? Since I’m a female, I’m not looking to put on a lot of muscle, just to burn some extra calories and get toned lifting weights since it’s all I can do. Also, how many calories should I be eating a night if I’m trying to lose 1-2 pounds per week? Thanks so much!
Hey Kristen,
Yes! Just weights is typically what I recommend to maintain muscle mass. Use your workout to maintain/build muscle and the Warrior Diet to lose fat.
For calories, multiply your bodyweight in pounds by 12 to get your daily calorie intake. If you don’t seem to lose weight on that, then multiply it by 11…