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. Hey
    i am getting married in two weeks and I am wanting to drop 8-10lbs. I can be strict but anything I have ever tried before has kept my weight the same.
    best advice for the next 7 days please?

    I only eat once a day. I have an iced coffee for breakfast (plain with no sugar or syrup) and then dinner is usually fish and veggies or chicken and veggies.

    I go for a run a couple times a week too
    thanks
    J

    1. Best advice? You should have started 2 months ago 🙂

      Advice you can use now: If you legit only eat once per da and only eat fish, chicken, and veggies, the weight will come off. Just don’t expect miracles in 2 weeks.

      Oh and congrats.

  2. I go on holiday in 1 month and want to loose one stone!! I am currently 19 and weigh around 8st 9. Is this possible?

    1. No, very unlikely at your weight. But chances are you do a lot better if you focused on building some strength and muscle and not worry too much about weight.

  3. Hi there, I’m trying to get my weight and overall BMI down to join the Air Force. Lost about 7lb so far and its been 5 days. Problem is I usually only eat the 800cal during the evening and I’m always starving in the morning and afternoon. I use to chew mint gum to stop being hungry but I’ve heard that all the sugar and alcohol in gum is actually really bad for you. Any tips on how to help. The green tea thing works in the morning, but it been so balls hot where I live that I can’t drink it in the afternoon.

  4. i read this post a year ago, but one thing keeps bugging me…. Please let me know WHY are you against any cardio on this one week diet? Is it because if you subtract the calories you loose from cardio from the 800 cal intake, it would be too low, or is there any specific scientific reason that you know and would not mind sharing – like you would not loose as much weight if you have such a low intake of calories and do cardio (because you would loose only muscle…etc)…

    Many thanks for the answer and cheers from Croatia.

    1. 800 calories is an ultra low calorie diet that combined with cardio, puts you in state where you’re very likely to lose muscle. Not to mention cardio itself doesn’t burn a ton of calories.

  5. Started a low carb diet a few days before I had my wisdom teeth removed. 10 days later I’m down 20#. (& Quit drinking alcohol lol)

    How can I keep it off and keep losing?

  6. Hey

    I’ve been eating 800 calories a day (or less), doing a 45 min weight class or spin class a day, plus working from work (40 mins power walking) yet in two weeks I have just lost 10lbs. Is there anything you can recommend for me to loose my remaining 8lbs? I’ve never put so much effort in before, and do feel more toned but still have fat to loose.

  7. Hi I go on holiday 28th August, and then again on 6th September, the main dae 6th September is my concern I would like to lose 2-3 stone in this time if possible, it’s a huge ask I know.

    Would it really be possible for me to have a calorie intake of 800? I’m considering doing 800 calories everyday for 1 week then up it to 1200 calories then back to 800 calories then 1200 again. Would this be ok?

    I am 14 stone 9 pounds 26 years old 5ft10

  8. Hy
    I need tips to lose my weight
    I m now 82 kgs
    And 20 years old
    Tell the fastest way to reduce my weight with in a month
    Kindly reply plz

  9. You can do it for 12 weeks or more if you are obese. The Optifast diet is 800 cals a day and it’s not that hard. I recommend it as it has worked for me. It is prescribed by physicians for those Who need to have stomache bypass surgery and must lose weight prior to surgery.
    I’m not in that category but was overweight and tried many diets. Optifast is great but you need to be motivated.

    1. it worked for you? awesome.

      But saying that it’s “not that hard” it just not true.

      Also everything said in this post is under the assumption that you’re not getting surgery to lose weight.

  10. You don’t recommend this for anyone under 18? What would happen if someone under 18 did this plan for a week, then went to a healthier plan after?

  11. Hi im 19 and i weigh 16 stones im 6ft. How much could i lose in a month by sticking to this plan and also what do you recommend i do. Thanks

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