Intermittent Fasting 101: The Basics On Fasting To Lose Weight

July 18, 2018 | 447 Comments


fasting to lose weight

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.

fasting to lose weight
Couldn’t find a relevant picture, so um… here’s a hot dog.

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.

Brad Pilon
Brad Pilon – creator of Eat Stop Eat

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

Leangains - Martin Berkhan
As you can see, fasting has made Martin a very fat man

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

Warrior diet
Ori hofmekler – creator of 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:

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.

447 Comments - Leave Your Thoughts

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  1. Hi there I’m 5’6 skinny fat guy with double chin (sigh) I am doing lean gains method is it okay if my maintenance calories is 2000 a day? I’m trying to loss some body fat and build muscle. Thanks

  2. I started Intermuttent Fasting after reading this about 4 months ago…I’ve lost 26 lbs & I’m feeling amazing! This works!

    1. hi can you please tell me how you done that?? im startig today with the 16:8 fasting. its 12 o.clock and its meal time cos i compleated my 16 hours fast

      1. a good tip here would be idk i mean if you are feeling hungry right now ahmet then sure go ahead and eat but instead try to learn to push even further since after the 16 hours your body is really starting to burn that fat ( stored energey) away and being on the 16:8 dosent mean you have to eat as soon as ur 16 hours end, a good tip here is also to use apple and sparkling water to push meals, lets say you are hungry right after ur 16 hours of fasting then try and eat a apple or drink sparkling water the apple will break ur fast but its alot healthier in the long run

  3. I’m on my second fast 22 hours in. My first only lasted 18 hours. Top score! The hunger has escalated at this point, probably because this is the first time I sat down today. The warriar diet looks awesome with the reward at the end. Weight loss is my main goal. No one wants to be the fat girl. I found that fasting with a friend really helps keep you strong and motivated.

  4. Hey Keith,

    I completely agree that fasting, other than weight loss, is good for getting more work done. The time I spend not eating (or grabbing snacks) goes towards being productive and getting more work done. I fast for religious purposes sometimes, but I can testify that the health benefits are awesome (somehow it makes my body feel light and healthy).

    Thanks!

  5. hay there- Im fasting 10-14hours BUT MY question is WHAT to eat when you Do eat! I really do not know? Is a keto- meat only approach best? or can i do a full carb vegan thing? and should i count calories? Please help someone

    1. You should defently tick to lean meats and vegies if yoou like it
      count calories for sure
      and you can pretty much do whatever you want to do aslong as you are in a caloricdefesit
      i myself eat chicken tuna veggies and fruit and stick to around 1200 calories
      im 6 feet tall and 206 punds male.
      and for fasdter results try make your fasting period longer.
      i myself recommend the 16-20 hours of fasitng .
      it will teacch you over time not to snack on random things in the house and it will also make ur body used to eating less .

  6. How much weight and at what rate should you expect to lose weight? I am a female about 5’1 with about 10-15 lbs to lose. I’m in week two and only lost 2 lbs so far? Is this normal?

  7. Hi, I just started fasting almost 2 weeks ago doing the 16:8. During my 8 hours I am eating good clean foods, healthy fats and keeping to about 1200 to 1400 calories. I am 5’1″ and have about 15 lbs to lose. My weight has gone up about 2 lbs and I am getting discouraged. I feel amazing and want to keep eating this way, I have more energy and don’t find it hard at all to stop eating at 8pm and start again at 12. I am having problems sleeping though, waking up at 3 am for an hour or so almost everynight, not sure how I can stop that. I have used melatonin a few nights and it maybe helped a bit. I have done a few HIIT classes but I’ve been reading that maybe that causes stress and increases my cortisol levels. I am baffled as to why I am gaining. I drink about 80 ounces of water a day and I’m not constipated. I keep telling myself that it can’t be fat I am gaining because I am not eating enough calories to gain weight. I am stubborn and will continue to eat this way, I have been a yo yo dieter my whole life (57 years old) but for the past few years I am finally getting control of my weight and it has been slowly going down and I’m keeping it down. I have been doing the 5:2 to keep my weight off but haven’t been able to get this last 15lbs off so that is why I started doing the 16:8. I love it and would like to continue to eat this way, so do you have any advice or thoughts on why my weight has gone up? Thanks for any input.

  8. Hi I’m 63yrs old female and weight 320 lbs. I have tried everything except weight loss surgery(no money or insurance)This is my last kick at the can. I had weighed 373 lbs
    Fasted and lost weight. Got overwhelmed by what I was facing and fell of the wagon. I ‘be worked it out with myself and now up to the journey. During this off the wagon period I fasted at least one day per week and while I have not lost more weight I have not gained, which is a blessing otherwise I ‘d be over 400Ibs by now. I’m writing to you for support as if I told my family , friends, or my doctor what I’m doing they would not understand and argue and debate with me continuously . I don’t have the time left. I just need a place to get support without the drama. Can you help me out?

    1. Hi Cheryle, I’m 56 years old, post-menopausal, and have hypothyroidism. I take a thyroid replacement medication after having had my thyroid completely removed over twenty years ago due to cancer. In addition, although I’ve never been considered obese, I am a naturally full-figured woman. In other words, I have several of the common factors that women often use as excuses to explain why they can’t lose weight. Nevertheless, I AM losing weight, and I’m doing it through intermittent fasting.

      I tried counting calories, but that gets old fast. I had read the Warrior Diet a few years ago, but wasn’t in the right place emotionally to really get going with it. I’ve been working out with dumbbells in the privacy of my own home for the past couple of years and have been pleased with my increased strength. However, I continued to stuff my face with food at all hours of the day and night so my weight stayed about the same. For some reason I started thinking about the Warrior Diet again, and this time I was ready to follow the intermittent fasting for real. I started doing it a few weeks ago and have already been getting good results. I’ve been eating one meal a day within a four or five hour time frame. Some days are easier than others, and on those days when my appetite is stronger, perhaps because I worked out hard the day before or for whatever reason, I’ll have a small snack such as protein powder mixed with juice. Usually that’s all I need to tide me over.

      I’m somebody who has “pigged out” practically my entire life, and in just a few short weeks time my mindset has been deprogrammed. I used to act like I would starve to death if I didn’t eat something the second I felt the slightest hunger pang. I guess you could say I was a typical American in that regard. I’ve come to realize that I never needed all that food. Eating more than two meals a day sounds excessive to me now.

      Anyway, Cheryle, I just want to encourage you to keep going. Like you, I don’t have health insurance and I also don’t have a lot of money. But what I do have is myself and my own indomitable spirit. It sounds like you’ve got one, too. You are right that your family, friends, and doctor would not understand what you’re doing. It’s best to offer them as little information as possible because other people like to find fault with things they don’t understand. Just shrug your shoulders, change the subject, and continue to follow your own path and do what is right for you. Keep up the great work, Cheryle!

      1. Great post! You are an inspiration! I too have hypothyroidism and am 55. I can’t seem to lose weight. I just started IF a couple weeks ago, and my pants are fitting a bit looser already. I have been doing strength training, rehabilitating knee surgery (meniscus). The strength training combined with NOT eating all day is not as hard as I thought it would be.
        Cheers! Here’s to NOT eating for 18-20 hours consecutively! I also fill up fast once I do sit down to eat and I thoroughly enjoy my one meal!!!!!

    2. Hi Cheryle,

      I too, am a woman of 63. I have recently been looking into the idea of fasting–not only for weight loss but for overall better health. I am 5’8″ and currently about 265. I would like to lose about 100lbs. It has been more difficult as years go by. I was thin–skinny actually–all my life until I had a series of serious physical accidents which changed me from an active person to an ‘in pain’ person.
      Also, as a woman, I think hormones play more of a part for us. All this is to say, I understand what you’re going through. I’m currently using the 24hr. fast approx. every other day. What I find is that my appetite has reduced. I truly am not as hungry at my one mealtime. I have not mentioned IF to my doc either. Mainstream medical is slow to accept most things, I’ve noticed. Anyway, good luck to you and remember that it does get easier as you continue. The first time was a bear…now, it’s pretty easy!
      Good luck,
      Evan

    1. i do 24hour fasting everyday, i do heavy weight lifting at gym in the morning, . .
      it’s been a year, and i’m good and big muscles, and i also don’t eat meat, . .

  9. I started a fasting/low cal/healthy eating plan back in August 26th of this year(2016).I drink a gallon of water a day and am fasting from 7pm-2;00pm and only eating a lunch ,then, of green veggies,4 oz. servings of lean fish,chicken or beef,and,a piece of fruit with dinner being veggie salad w/vinegar dressing, 4oz. lean fish,chicken or beef,piece of fruit.I have been dropping weight right along but on hold,for some reason,now.

  10. Hi I’m a biologist. i couldn’t bring myself to carry on reading your article after the part where you emphasise your body not burning muscle for energy (calories). I tried opening the article, which didn’t work. I just want to set the story straight because that is infuriating when I know the facts. It isn’t lies that your body will burn muscle for fuel if your caloric intake is too low. Naturally, long periods of low calorie/fasting will force your body to burn muscle, remember the fact that our bodies have taken a long time to adapt to the way it is now. In an evolutionary perspective, if food supply was short, muscle would be an easy loss, as they wouldn’t be as beneficial in the long run (again on prolonged low calorie/fasting). I’m not saying intermittent fasting hasn’t got merit, it might even be a good idea, but that would have to be on an individual basis, and if the person went on long fasts (something ridiculous like 24hrs) every day or few days then they’re more likely to burn muscle than fat. You can’t forget, your body isn’t programmed to the fact that most people can get food either delivered to their door, or a short walk away.
    And addressing the study you linked. The link doesn’t work, which may be due to the article being retracted (removed) from the journal. Small sample sizes can’t be held as representative to the majority of the population.
    One last note, calorie cycling might be a good one for you to cover (if you haven’t already) as low calories daily can eventually make your body think that more food resources are NOT available and not be beneficial in the long term, whereas breaking it up with one meal/day of base line calories (eg 1800-2000 calories for women as a rough estimate) in a week would allow the body to work at an optimal level.

  11. so I’ve just started intermittent fasting, what I do is skip breakfast and lunch and don’t eat anything until after gym (Monday, Wednesday, Friday) around 8 pm. It’s really easy for me to go without eating that long so is it healthy to only eat one meal a day? also is it healthy if the meal isn’t as high in calories such as around 1000 calories rather than 1500+ calories since I’m only eating one meal?

  12. I’ve been intermittent fasting since Halloween and I’ve lost 20 pounds! I’ve been on every diet known to man and I’ve taken every pill… But this way of eating makes losing weight flawless. I just keep track of what I’m shoving in my mouth when I do eat so my fast was not in vain! I have worked my way up to 20 hour fasts daily! I listen to my body and eat when I need to eat.

  13. Hi I’m a 19 year old female who weighs 75kg. I’ve been trying all my life to Lose weight but I just lose about 1kg and gain it right back. I just read about this intermittent fasting and I’m coming to try it. I really hope it works oh and I’m 5’8″

  14. Hi. I’m 28yrs old and 5″7 weighed 165lbs. I gained tons of weight after pregnancy.

    I was 60kg before pregnancy, weighed 82kg before putting to bed and lost few pounds after delivery.

    I’ve been staggering between 165 and 163 pounds since delivery.

    I want to shed 40 pounds at most cos I feel too heavy for myself.

    I started this IF 5 days ago and I’ve lost 2 pounds. We’re getting there *smiles*

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