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. I’m 29 about to be 30 and I just started IF a week ago. I have been at a stand still with my weight for months now at 178lbs and I’m 5’8. I got down to 159 at my lowest and I used to be 204lbs. I workout 5 days a week at 7 am and only eat between 9am and 6pm. I drink a gallon of water a day. My question is is it ok to workout while I’m fasting? So far I feel better and healthier I still eat very healthy, try not to eat too many carbs. I jist worry working out while fasting will cause me to lose muscle .

  2. Hello….I’m 18yrs,158lbs,6ft2inch.
    I lost 20 pounds in 2 months with the warrior diet and some workouts and I ate anything I wanted without tracking my calories.
    I started counting calories on Jan 7 and my weight was 160.2lbs.My maintenance calorie is 2200 but I ate more than that almost every day.
    When I climbed the scale today,it showed that I lost 2 pounds.
    Pls I wanna know if this is possible?

    1. If it’s after a prolonged period of dieting, eating more after will typically cause a drop in weight.

      Another poss. is that your maintenance calories are actually higher than 2200.

  3. Hello,
    Thank you for such an amazing article.
    I have a question. Is it a good idea to have one meal per day (plus a lot of drinking, water and juices throughout the day) after workout but before going to bed? Is it healthy? Because I heard that it’s a bad idea to eat before going to bed. Well, that’s my lifestyle.
    Thanks,

  4. Thank you for summarizing the different intermittent fasting techniques available for weight loss. I am going to try to eat once a day just to save time

  5. Hi, im raine, 19 yrs old. I would like to ask if I fasted for 20-24hrs then at night i’ll eat a huge meal , sometimes over 1000 calories. i don’t work out. Am i going to gain weight? By doing it almost everyday ?

  6. I’ve been intermittent fasting for 4 weeks. I’m already down 26 pounds. It was tough the first week or so but now I couldn’t imagine going back to the way I was eating. It’s definitely a lifestyle choice.

  7. Hi, I have a question regarding the IG Eat Stop Eat. On the fasting day would it be ok to drink veggie and fruit juices and for example matcha latte tea or it should just be water. Also is it ok to workout on the day when fasting or if it should only be some light exercise as walking.

    1. If you follow ESE, it should just be non-calorie beverages like water and tea. No match latte frapa vanilla shit.

      Yes u can workout on fasting days.

  8. If i eat just one meal per day but eat like 600-800 calories for dinner, will this help me to lose weight? I am a girl 17 yo and I need to lose around 10 kg.

  9. Hi, I started the 16/ 8 intermittent fast and was wondering if it makes a big difference if on rare occasions your fast is cut in time to less than 16 hours like 14 or 15. Basically is there a minimum time needed to achieve ketosis?

    1. Nope doesn’t matter at all. As along as calories/macros are the same sat the end of the day, that’s all that matters.

  10. Can you eat three small meals during the 6-8hr fasting?
    Example:
    5am wake up
    10am first meal (e.g. About 400 calories)
    2pm second meal (e.g. About 400-500 calories)
    530-6pm dinner (about 400-500 calories)
    Bed by 9-10pm
    Fast from 6pm-10am

    I am 5″1 @180lbs … need to lose about 50-60lbs
    I tried the two meals during fast and didn’t shed a pound
    12pm meal 1
    6pm meal 2
    8pm -12 pm fast
    Or does my body just need to get used to the fast?
    Thanks in advance!

  11. I have fasted in the past, and am currently fasting now. I do believe my first time fasting I did a five day water only fast and lost about 10lbs. I hadn’t actually planned it but I was so upset at myself for a meal I had eaten, I just stopped eating until I couldn’t take it, just to see. Not the best idea, but I use it against my children when they complain about “starving”. I also proved to myself that I could go without food and would not wither away and die without it.

    Since then, I have learned more about intermittent fasting and have been successful with it when I have stuck to it. In our family, especially with my mother and I, it is second nature to skip meals, and only eat once or twice, sometimes accidentally going 36hrs without food simply from being busy so that may also be a reason why IF comes easier to me than I previously had thought it would.

    Last year I used IF successfully for two months by doing 24hr fasts, three times a week. I had started with one, and once I was accustomed to that, I increased my days, and ended up losing 25lbs in two months. Although I became lazy and stopped, I managed to keep the weight off by limiting most of my meals to eating only after 5pm.

    Last month I started my 24hr fasts again, once a week, in order to become accustomed to the routine again, which wasn’t hard since I had already been limiting my meals. However, my issue was breaking my fasts and then going right to sleep (I fast from 12am-12am. Due to this, I have increased my fasts this month to 44 or 45hr fasts, three times a week, with a 3-4hr eating window. Since the 2nd, I have lost 8lbs. While this is an extreme for most people, it works well for me. Most days when I go to break my fasts I force myself to eat because I usually am not hungry.

    I have 93-98lbs to lose, but once I reach my goal, I will continue to fast in order to maintain my weight, though I have not decided on what my schedule will be yet. I am happy to have found IF, it removes a lot of the stress and anxiety I had had where food was concerned.

  12. Hi,i was just wondering why you can eat fruit while fasting on the warrior diet but then eat nothing while fasting on others #confused

    1. It’s just how the diets themselves are setup. But you can eat fruit on any fasting protocol. There are no hard set rules u need to follow.

      The most important thing about IF is to get the majority of your calories in those main 1-2 meals.

  13. I have only been doing IF for 8 days so far and I already feel so much better. I am working up to doing a 20 hour fast every day but have been doing around 17/18/19 hours each day. Before I started, all I was thinking about was food and I would binge most evenings, feel terrible about myself then repeat the next day, it seemed to be taking over my life. I feel like I have gained control again, I love not having to think about food all day until I break my fast and then I eat as naturally and healthily as possible. I also have way more energy, can think clearer and have lost 7 pounds. Absolutely loving IF. Feel like a different person.

  14. struggling with macros whilst fasting and know what my cal intake should be not sure about percentages or carb.fat.protein to lose the weight to programme into myfitnesspal

    can you assist

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