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. hey im currently trying out the leangains IF is it essential to take the bcaa before workouts and will i still shed the pounds i need if i dont take it before workouts….oh and can you still have a beer every now and then

    1. BCAAs are basically nutritional insurance against muscle loss. In no way are they 100% necessary, you will still lose weight if you don’t take them.

  2. Hi Keith, I recently read a book written (can’t exactly remember the title) by a Japanese Doctor who is a strong advocate for fasting. In his book, he explained the benefits from eating one wholesome meal per day. I tried this for 5 days (but failed) and came to the conclusion that it wasn’t quite right for my lifestyle. However, during that time I did feel like I had a better understanding of eating when I’m actually hungry and habitual eating. I’m 21 years old, 176cm tall and weigh 63kg, would like to lose some fat and overall tone my body. I like the idea of fasting for 24 hours 1-2 times a week. I generally try and stick to a 1200 calories a day diet (however, I drink/indulge in some bad choices on most thurs/fri/sat/sun nights on a weekly basis, which sometimes involves a 48-72 hour bender/liquid fast…) I’m still working on this aspect of my life… but you know how you mentioned that eating 6-8 meals a day is equivalent to one big meal of equivalent calories? How does IF aid with weight loss, If I’m going to eat a 1200 calorie meal in one sitting anyway? What difference does it make that my body has that 24 hour rest when I’m going to consume the same amount of calories that I would on any other non-fasting day? And also, after a big weekend, when I’m feeling the Tuesday blues, my appetite and desire for food sours exponentially and I just can’t seem to control my desire to eat comfort foods and how much of it I eat…. Apologies for the long essay… Cheers

    1. IF doesn’t exactly speed up weight loss.

      6 meals split up into 1200 calories is the same as 1 1200 calorie meal.

      Like you said, the main benefit of IF is to improve your understanding of eating – to know when you’re truly hungry v.s. when you’re just bored or emotionally strained.

  3. okay so I just read the difference between the Warrior diet where you eat your entire calorie intake in one sitting as opposed to Eat Stop Eat – so I shall reword my question, how many calories should that meal after the 24 hour fast have? Is it alright for me to have a 24 hour fast and then order a 10″ supreme pizza and eat it all? Thanks again

    1. There are no direct calorie guidelines for ESE, the only rule is to eat a “normal sized” meal meaning don’t purposefully overeat or undereat.

      Personally, I try not to go over 800-1000 cals on my ESE days.

  4. hi…..i am a 16 year old boy height 5’10 and weight 178 pounds….i workout 5 days a week…..i just started ese on sundays……will it work for me ?
    and can i drink water between the fast so that my stomach feels full

  5. Eat-stop-eat and Leangains are my favs. I use leangain and starting to see some great results (some initial abs for the FIRST time of my life =] )

    Buy eat-stop-eat and you will be good folks.

    BTW Keith,

    in your last comment you said:

    ” No water is fine. ”

    Dont you wanna say :

    ” No, water is fine ” –> with common ?

    Regards,
    Jack Tyler

  6. Hai There Keith

    About Six Month, i already follow fasting as my way of life beside workout 3-4 times a week. Have u ever knew the OCD ( Obsessive Corbuzier Diet) its quiet populer dan Controversy in my country…is quite the same as the other fasting program ? to increase you HGH, Human Growth Hormone ?

      1. Would u mind, Check it out… http://www.readyforfit.com…u can download the English version pdf…OCD have the same procedure of fasting, but u can manage to choose between 16, 18, 20,& 24 hours..
        And please give me your brutally honest opinion, when u compare IF and OCD
        Thank you so much….

  7. Do you know how much weight a person could lose if they went on a 20-24 hour fasting? I wonder, I have appoximately 2000 maintance calories. I’ve tried fasting 20-24 hours 2-3 times (today, in fact), to see if I could make burning more flexible (if I eat more one day or haven’t burned anything).

    1. How do you fast for 24 hours 2-3 times in a day?

      You lose a lot of water weight during the fast more than anything else.

      1. I meant I’ve tried it 2-3 times as in days, lol.

        So like you said before, fruits, veggies,water and tea are the things that help with losing water, right?
        Do you know if fasting could (should?) be done every day, for a week? For really quick results, I mean. Sorry I bombard you with questions, I’m just really into it.

        1. Depends which style of fasting. Def don’t do ESE style fasts every day but you could do the Warrior diet every day.

  8. I RECENTLY CUT OUT all snacks….3 meals a day no snacks at all. What a shock to my system. I kept going to the cupboards/fridge every hour…looking for biscuits/ snacks etc..just pure boredom. I don’t think you realize how many calories you consume doing this day in and day out.

    I like the ESE fast….i am going to try this. thx

  9. How do you feel about one 36.hour fast per week as well as only eating in an 8.hour window on the other days ? Pros and cons ? Thanks

    1. It all depends on what you’re comfortable with. Have you tried a 36 hour fast? A pro for one person may be a con for another. But right off the bat, I know not eating for 36 hours straight can be a bitch 🙂

      1. yeah i have actually pulled off a 3 day fast a couple of weeks ago like a boss ..36 hours is nothing for me . . i eat to live not live to eat like some! Haha

  10. I really enjoyed reading this article. It was very informative but I’m not sure pertaining to my goals what would be best. Unfortunately I had a 5000cal binge (3000 calories above my maintenance caloric intake per day) Would it be beneficial to do a straight 48 hour fast or perhaps do 24 hour fasts twice a week (fast eat fast eat.) in order to stay within my maintenance level caloric intake for the week and not gain weight? My maintenance caloric intake for the week is 12000
    An example of a 48 hr fast would be: Monday, I ate 1900 calories, Tuesday 5000 calories, Wed-Thurs Fast, Friday eat 1700, Sat 1700, Sun 1800 cal.

  11. I’m 35, have 3 kids under 5 & need to lose about 6kgs. Will two 24 hr fasts a week help me lose weight? I have considered the 5:2 diet but 36 hr fasts really suck my energy & I need all I can get. Thoughts?

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