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

July 7, 2022 | 3729 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. 

3729 Comments - Leave Your Thoughts

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  1. Can you do this with the protein shakes? IE breakfast I eat scrambled eggs then lunch / dinner 1 protein shake. I am using the Syntha-6 whey mix.

  2. I really hope this diet plan works I’m desperate at this point I just received my senior prom dress which is in a little less then two weeks and it didn’t fit!

  3. I have a question. You mentioned to weight train 2-3 times in the week. Should I do cardio the rest of the week or should the weight training be the only form of exercise?

  4. Can i workout 5 days a week? Also, you said to only do this for a week because “youll probably binge back to your orginal weight”. So can i do this for more than a week if i dont end up binging? Thanks

  5. OMGOSH!!! I love how you handle some of these questions on here. LOL.
    Anyways, I just finished my 1st day of this and let me tell you, it was not easy breaking those nasty habits that I have. I LUV food. I love the way it tastes, feels, smells, looks….you name it. I love it. I also believe that I am TRULY ADDICTED to SUGAR. I have a hard time saying no. I am 5’4″ and I weight 202lbs. (Well, I did yesterday…the scale said 198lbs today). I am trying this to kick start a change in my habits. I’m hoping this will help me stay away from the sugary foods. I am following this EXACTLY as you wrote in your blog. I will follow up with my results at the end. Thanks for sharing. 🙂

  6. Could you provide some examples of heavy compound exercises… How many times/days over the 7 days should I be engaged in these exercise and for how long?

  7. I’m at my 48 hour mark and I am down 4 pounds. The first day was hard, because I wanted to go back to my bad habits of sneaking food. I just kept myself busy and had to internally “YELL” at myself to back away from the junk food.
    Day 2 was a little easier. I think I was a little more determined on the second day. I really want to lose the weight and I don’t want to think that I went an entire day fasting and eating so little for nothing. It has turned into a competitive game for me. The hunger is manageable, but the lack of texture and taste is still hard. I’m pushing through though (and brushing my teeth more, just so I have something other than water to taste). I will update more later. So far, so good. I’m happy I have lost 4 pounds.

    1. Day 3 and I”m still going. Last night was tough. I wanted FUDGE so badly. I ate a couple of sugar free cookies instead and stayed under my calories for the day. Breaking bad habits is not easy, but doable. I have lost a total of 6 lbs since I started. If I keep this 2 lbs a day up, I’ll lose 14 lbs by the end of it. I’m not as hungry today. I had a lunch date with my 3 year old daughter and I ate half a chicken sandwich on multi-grain bread. It was 200 calories. Now, I’m going to wait until dinner so I can eat with the family. Today is the first time that I will have 2 meals instead of the one. But honestly, I was satisfied with half a sandwich. I’m still hanging in there.

      1. OKAY!!! I FELL OFF THE BANDWAGON!! I had 2 major family events, back to back and I ate, just so people would leave me alone. I broke the “fast” that I was following. So, with that being said. I lost 8 lbs in 5 days. I believe that I could have lost more if I had just stuck with it. I am going to wait a month or 2 and do this again. I don’t want to do it right away because I know it is not good for my body to do this for longer than the week recommended. I have been on a lower calorie….sensible meal plan since I stopped the fast and I have not gained any of the weight back. Hopefully, I will still lose more in the next couple of months. If nothing else, I am very happy because I have lost a few pounds, I have been able to lower the amount of food and calories that I was eating before, and I have been able to BREAK the habit of snacking and eating sugary foods. That was the hardest part. Thank you Keith for giving me the tools I needed to Kick myself in gear. 60 lbs is a lot of weight and I wouldn’t be where I am today if I didn’t have bad habits. This is exactly what I needed. Thanks again.

  8. “the majority of your calories should probably come from protein, fruits, and veggies if you want this diet to be effective” Can’t be any truer, I just completed 8 days, hadn’t read this pade prior for disclosures’ sake, but did pretty much everything recommended to the letter of the law. The one exception, I drink 3-5 ounces of wine with my dinner nightly, which is usually just a leanish piece of meat with wine. I lost 26.7lbs in 8 days doing that like religion, less than 800 cals most days, mostly fruits and veggies, calorie free liquids are unlimited, eat if you’re feeling like you need to, exercise at least every other day, carbs are at morning and lunch and should be limited to whole foods/fuits & veggie sources, and after noon the only carb is 3 ounces of wine with a lean cut of meat. 26.7 LBS!!! 8 DAYS!!!

  9. Day 1 – not even hungry and I’ve only had 1 meal today. So far so good. I purposely don’t have scales at home but to give you an idea I’m starting out on 180ish pounds. Will see how it goes! I reckon this will be easyish to do in 7 days as I have no work for the next 7 days.

  10. my birthday celebration is this up coming friday night. I’m going to follow this weight loss plan til then. I’m probably about 117 and I really want to get down there. . I feel like this is going to work. thank you so much for creating this post.

  11. How does one come off of this diet and not regain the weight they lost? Should I slowly work back to a diet of 1,200 calories and continue working out? (I’m 5’3, female and 115 pounds)

  12. Why can’t you run while doing this? Say I did this for the week but added in cardio because I know nothing about other exercises? Would I still be able to lose as much weight in the 25 days?

  13. Hey so im about 5’11 and weigh around 170 and have a large sum of fat on my chest stomach and around my body my thighs are kind of fat also my arms are thin as heck if i follow this like a religion and work out 5 days a week as a educated guess how much will i lose?

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