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

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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’m 5’6 and I weigh 161 pounds, would this diet fit my lifestyle meaning I do try to workout often and play sports and currently on off season. Is fasting a good choice when trying to get to 150 pds?

  2. I don’t understand why a person couldn’t do both lifting and treadmill time. You didn’t explain that very well, and I’m afraid of getting that knock on the door with a stranger wanting to kill me. 😛

    Mind explaining a little further? Is it because you believe there will be a loss in muscle mass as a result? If so, what are you basing that on? You mentioned two groups doing completely different things, but there doesn’t appear to be any comparison with people using the “All of the above” approach.

    I actually did something similar to this about 8 years ago. Started out with 500 calories a day and gradually increased it to about 750-900. Kept it up for several months and lost about 65 pounds. No noticeable muscle loss. Might not have been the healthiest way to go, but I felt great and was making sure to take vitamins, protein drinks, etc.

    Not arguing. Just curious as I have now gone on the Keto diet to re-lose what weight I gained back. (Most of it stayed off for years without any real effort. Yay me!)

    1. if you have substantial amount of weight, which it sounds like you did, you can be more aggressive. But even then i dont recommend it since it’s just too much to do for long term results for most ppl

  3. I want to know, what should you do if you already eat less then 800 calories?
    I want to compete in a bikini fitness competition next year and I am busy preparing for it. I want to try this diet in order to loose more water weight. What would you recommend for me?

    1. water weight isn’t something you typically focus on that far out. If you plan on eating less than 800 from now till next year, you’re prob not gonna feel too great.

  4. I have been doing this plan for 4 days now it’s hard but getting through it and lost 4.5lb already can you help me on what food plan to do once my week is over please, I am 13stone 7 now 5ft 8?

      1. That’s really interesting about the bw plus 10 recommendation. I currently weigh 182 pounds and my target weight is 140. If I follow what you say and eat a daily calorific content that is 10 pounds over that particular daily weight, should I see a manageable weight-loss over time, please?

        1. Sorry!!!!! I don’t mean 10 pounds over that weight!!!! I mean 1820 calories … reducing according to pound weight per day!

  5. If I’m 5’1 and weigh 197 pounds and wants to be down to 145 by October how do you recommend I do this without failing. I barely eat now because I’m an emt so I never have the time but I also haven’t lost or gained any weight in the past couple of months and it’s pissing me off.

  6. I’m 5’1 and I weight 187 , I’ve been gaining 10 pounds since last year and I need to lose weight, but all my life I’ve been STRUGGLING to lose it so hopefully this works because I at least wanna go back down to 150..

  7. Hi Keith
    So I stumbled across your page and had a question.. I started a liquid diet this week and wanted to know if it would be a good idea to combine the 2 Step plan or should I wait and start that another week? Thanks!

  8. Posted in the wrong place . Sorry. Here’s my original post:
    Hi Keith,
    Gained a LOT while pregnant and now trying to get the weight off. Tried keto and it didn’t work for me. I’ve dropped down to between 600 and 800 calories a day and boxing (sparring and training). I plan on taking some water aerobics classes soon too. Is it safe to keep this up? I plan on trying to do this until next May. Also, should I stick with more low carb and nix the fruit or is fruit necessary? I should add I had gastric bypass at 18. Gained a bit after reversal surgery due to malabsorption. So went from 165-175 over a few years. Now 238 after my little one was born. Well, loss about 12 pounds since May.

  9. Just came across this, I have been currently Intermittent fasting and drinking nothing but water for almost a month now while taking the phentermine pill. I go back for my checkup in a week to check progress (I don’t weight myself until these appointments). I do 40-44 hour fasting and when I eat I eat high protein foods with no carbs. Only thing im missing is the exercise which I believe would really bring in results faster.

      1. To help fight cravings, and give me the extra energy from not eating. Hoping it helps shrink my stomach so I can become full quicker when I do eat.

  10. HI Keith

    Do you recommend high water intake? on this!

    Look to start Sunday got a break in Miami I need to shape up for.

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