Extreme Weight Loss (2022): How Much Weight Can You Lose In A Week?

July 7, 2022 | 3727 Comments


how much weight can you lose in a week without eating

Important note: Please advise your doctor before following any plan. Don’t follow the advice below if you are under 18. 

People always ask: How much weight can you lose in a week?” Well… to answer your question I have good news, awesome news, and bad news.

First onto the good news: YOU CAN LOSE A TON OF WEIGHT IN ONE WEEK

That’s right, you don’t have to be bound to the conventional wisdom of only losing 1 or 2 pounds a week. Extreme weight loss diets can definitely work, but only for a short period of time.

In fact, you can lose up to 15 pounds in one week if you do it correctly.

Now onto the awesome news: ALL THAT WEIGHT YOU LOSE WILL BE WATER AND FAT, NOT MUSCLE

Yup, you read that correctly, if you follow the methods at the end of this post, all the weight you lose during the week will be pure body fat. The conventional statement that losing more than 2 pounds per week leads to muscle, organ, and hair loss is absolute unicorn shit.

How do I know this? Because some awesome scientists from the American College Of Nutrition back in 1999, conducted a study, which tested 2 groups of people for 12 weeks.

One group only did traditional cardio, while the other group only did weight training. Both groups ate 800 calories a day. At the end of the study, both groups lost large amounts of weight, but the one that only did cardio lost large amounts of lean muscle mass, and the one that only did weight training didn’t lose any muscle mass at all.

So there you go, some hard hitting scientific facts that prove that you will not lose muscle during extreme dieting as long as you lift weights.

Note: And if you don’t have a gym membership or if you don’t have access to any weights, then doing a well-designed bodyweight program like Bodyweight Burn is your next best option.

And lastly, the bad news: YOU HAVE TO EAT VERY VERY LOW CALORIES

So yeah…. you have to eat a ridiculously low amount of calories to lose a lot of weight in a week. I’m talking along the lines of 800 calories a day.

The amount that would make any nutritionist hang themselves.

And now, onto the plan, but first, a picture of steaks:

How much weight can you lose in a week protein
I didn’t want to put a boring picture of a scale, so here’s some delicious steaks. I’m guessing this isn’t the best article to put this picture in

The 2-step plan to lose the maximum amount of weight in a week

Please note that the following plan can be used by both men and woman.

And don’t do this plan if you’re under 18, you’re way too young to be eating such low calories.

I guarantee that if you follow the plan below, you will lose 10-15 pounds(water and fat) in one week:

1) For one week only, eat 800 calories per day.

2) Workout 2-3 times per week with weights. Make sure the weights are heavy and be sure to hit all body parts.

That’s all.

Some notes/tips about the above 2 steps:

  • 800 calories is very little food, for any man, woman, or baby walrus. Because of this, I suggest that you only eat 1 meal per day a la Brad Pilon’s Eat Stop Eat. If you eat one 800 calorie meal per day, then you’ll at least feel somewhat satisfied, but if you split that up into 3 or even worse, 6 meals per day, then you’re not going to fare so well on this one week venture. Yes, this means that you will be fasting 24 hours every day for a whole week. Just remember, you will be burning fat, not muscle.
  • Whenever possible, eat higher protein and eat foods with high water content such as fruits and soups. Also, drink lots of coffee and green tea, since they both tend to blunt hunger quite well.
  • Stick with heavy compound exercises when in the gym. That means no curling and crunching, and if you even step foot on a treadmill, my dumbass radar will go off and I may have to kill you.
  • If you can’t lift weights, then your next best option is to do some sort of bodyweight training. You know…exercises like squats, push-ups, lunges, pull-ups, sit-ups, etc..
  • This is a mental game more than anything else. When you’re eating very few calories to lose weight faster, your mind starts playing tricks on you. Your stomach is gonna be grumbling more often. And there are gonna be times where you want nothing more than to self-sabotage yourself. Which is why the next point is so important.
  • Above all, keep yourself distracted and out of the kitchen. If you’re constantly prancing around the kitchen and thinking about food, you’re going to fail. So keep yourself busy. Read a book, play some video games, take a nap, work on your tan, or shave your pubes. I don’t care. Just do something that doesn’t involve food.
  • [EDIT 10/6/2014] I should also add that your protein intake needs to be HIGH. Like really high. In fact, the majority of your calories should probably come from protein, fruits, and veggies if you want this diet to be effective. The protein will help keep you full but more importantly also help maintain muscle.

Remember, this is only for one week

I just wanted remind you all, that this sort of extreme weight loss plan is only a temporary plan.

The results don’t have to be temporary, but the plan is. Please do not try and do this weight loss plan for more than a week.

Doing so is really going to mess with your head and you’ll most likely binge back to your original weight.

After one week, transition to a more moderate weight loss plan for the long haul.

I hope you guys now know how much weight you could lose in a week if went balls to the walls.

Want even better results? Take it to the next level with Fat Loss Boost

Many people have been asking me, “Can I do this for more than 7 days?”

Uh…

Yes and no.

Technically, you could eat 800 cals per day for a sustained period of time.

But sooner or later it’s gonna backfire on you.

If you want a more sustainable rapid fat loss plan…

Then I highly recommend checking out Fat Loss Boost.

This is a more long-term approach than the strategy I outlined in this blog post.

It’s a strategic rapid fat loss diet that works in 14 day cycles.

So you go hard on the diet for 14 days, lose a crap ton of weight, take a break, and repeat.

And the results from Fat Loss Boost are even better:

“I have been able to lose 10 pounds using this program. Starting weight 186. Weight this morning was 176.”

“I lost 12 lbs for my first attempt. Started at 201.7 and ended at 189.9. I am amazed!!! Thanks to everywhere for all the support and great hacks.”

“Ok people I’m done 😀. I hit 171.8 today, my goal was to break 172 on this round which was what I weighed almost ten years ago (lowest as an adult). That’s 30.2 lbs in just under 3 months.

Pretty crazy, right?

Definitely give it a look if you want a realistic, yet challenging plan that burns fat faster than anything. you ever tried before.

Check out Fat Loss Boost

=================

Questions? Like steak? Let me know down below.

I respond to (almost) every comment, which is pretty crazy considering there’s been over 3000 comments. Sigh…I need a hobby. 

3727 Comments - Leave Your Thoughts

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    1. I would start with 1800-2000 calories per day to start. If you can consistently do that for 12 weeks, I guarantee you’ll lose a lot of weight. And it’ll be a lot safer than going extreme 800 cals per day.

    2. I’m 5’7″ and 170 pounds and even though I’ve been called beautiful and thin, I need to lose 20 pounds to feel better about myself. I am willing to do this and it will be hard but I will try because I need to be thin. I just want to hear those word “have you lost weight?” But seriously my friends can’t believe I’m 170 they thought I was 130 but I have too much muscle which makes me heavier. I just really need to lose fat and be skinnier.

  1. Hello Keith,

    I’m 5.5 and weigh 190lbs I’ve been struggling for years to loose weight especially after having my kids.I will do the 800 calorie diet and day. I just want to know exactly what should I be eating and would I need to weight my food to get the best results? I want to loose as much as i can within the week 🙂

  2. Hi Keith,

    Thanks for this. Is there a reason why someone couldn’t do this for longer than one week? For example, one month?

    1. – Very low success rate
      – Those who do technically get through a month of 800 cals per day have an extremely high chance of rebounding, binging, and gaining back all their weight plus more.
      – Doesn’t teach you how to form healthy long term habits
      – Not to mention the insane amounts of muscle loss and hormonal declines you’ll see over a month.

      1. Sorry, this comment posted separately, but I meant to reply directly to you. I had written —

        “Thanks! Makes sense, especially from a behavioral standpoint (e.g. binging, poor long term habits, etc.). If someone was able to continue this plan for, say, 3 months would muscle loss be inevitable even with the heavy lifting 2-3x per week?”

      2. We have become slaves to other people’s opinions. We have always heard: to eat healthily you need 5, 6 meals a day, a certain amount of calories, a certain amount of protein…. We have forgotten that our bodies follow the rules of nature and that the 200,000 years of humans being around is not enough to change our metabolism. Studies confirm that fasting can benefit us (sorry for not citing authors, but anyone interested can look them up). Plus, we, as people, eat too much anyway, and are obsessed with food. Look at all the restaurants and cafés around. I’ve been fasting for a couple of months: lost a stone (little to moderate exercise, not counting calories and macros, mostly vegan), my focus improved, feel more energetic, and it suits my lifestyle ideally as I can keep busy during the day and enjoy a meal with my other half in the evening. With this in mind, I can suggest however that this kind of dieting should be done by experienced people who know their bodies well and know their limits.

  3. Thanks! Makes sense, especially from a behavioral standpoint (e.g. binging, poor long term habits, etc.). If someone was able to continue this plan for, say, 3 months would muscle loss be inevitable even with the heavy lifting 2-3x per week?

  4. Hey im 15 yeara old lol i didnt read the article all the way until it said dont try this if your under 18 well thats what i get my head hurt for at least 3 days don’t try this please if your under 18 im only 15 just trying to lose weight

    1. If you know how, basic compound exercises like squat, deadlift, bench press, pull ups. Just try to avoid focusing the majority of your workout around things like bicep curls and crunches.

  5. Hi I am 23 and I am 5’4 and weight about 206 pounds. I want to lose weight quick but not sure how too ? Will this one week plan be good for me

    1. It is not a magic pill, which i’m guessing is what you’re looking for. Any diet that has you eating less will help you lose weight, this can just speed up the process slightly.

  6. Hi, Thanks for this post!
    One question, is this diet gonna only work for people that are over weight or will this also work for people that wants to loose about 7-8kgs?
    I’m 1.63cm and weigh 60kg. Really want to lose about 8kg, been struggling to lose after my pregnancy. If I stick to 800cal/day high protein and attend body pump lessons at the gym…. how much do you predict I will be able to lose?

    Thank you!

    1. It works best for those that have a lot of weight to lose.

      If you only have 10 more pounds to lose, you will not lose 10 pounds of fat in a week.

    1. timing doesnt matter. If you workout that much, I prob wouldn’t do 800 per day, or i would at least bump up calories by a couple hundred.

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