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. I am 35 years old, female. I gained over 30 pounds like few years, probably different reasons but mostly lack of exercise and night-time eating.
    I am 5’4 and weighed 175 lbs 6 weeks ago. I started to do some cardio and also Jillian Michaels 5x a week which does require me to lift weights although not heavy, I use 5 lbs and it’s circuit training, compound exercises. I also eat about 1100 calories a day now. Some days I’ve cheated because we had to eat out. Anyway, lost 10 lbs in the 6 weeks, so I’m kind of disappointed because I according to what I eat/burn I should hae lost 20. I want to try your plan, so you are saying to eat one meal of 800 cals a day? Right now I eat 3 small meals and 2 snacks. Should I also nix the cardio (which is zumba) and only do jillian M? I can’t go to the gym.

  2. Great article!
    I am 5’7 and 155 pounds, 19 years old.
    What kind of weight lifting exercises would I have to do to achieve the best results?
    I’ve never done any weight lifting before.

    Could any other exercises be used to get similar results?

  3. Gonna start this tomorrow.march 30th. Will putt weight on here tomorrow when I start. Then I will be back in one week to hopefully tell u the good news of login weight.

  4. I’m 25 weight 168 I’m 5feet I ate a lot today so IMA try this tomor I don’t have and weights tho what can I use or do instead…do I not eat anything at all for a week or what foods do u consider/drinks

  5. I am currently circuit training 4 times a week, eating 1500-1800 calories and now dropping much weight. I am 5’7″ and 295lbs. I am going to do this and see if that jump starts anything.
    Question – are BCAAs important to take during this week? I don’t want to loose the muscle I have been working hard to build.
    BTW, Keith, you rock!

  6. 10 years ago I dropped from 625 to 300 in one year because of a disability that has me in a power chair over 10 years 75 came back. Going to do this 3 on 4 off and see what I get. Being in chair I am not able to do cardio . power lifting happens every time I get my fat butt up lol.

  7. I’m going to give this a go. I’m 5’0 (don’t worry, I’m not 15;), I’m 40) and weigh around 122 give or take a couple of lbs depending on the day. I REALLY like the idea of eating one big meal. Come to think of it, I constantly whine about how I used to eat Taco Bell everyday in college and I was skinny. Well, I did eat Taco Bell everyday but that was pretty much the only meal I ate bc I wasn’t hungry the rest of the day. Anyway….. I’d like to get down to 110 and I’m not a very patient gal. I’ll be happy to flash-lose 7-8 lbs and I’ll work on the rest. I’m more comfortable with cardio so entering the scary weight room will be a challenge. I’ll post back in a week!

    1. Keith is correct and this works. But if you want an easier method, which is sustainable forever, after you complete this, look into Kinobody programs. Lift heavy 3x/week for 45 min, cardio is optional, eat at a deficit (more than 1000 cal for most people) and gain muscle and lose fat at the same time. Definitely works, even for women over 40. Six pack is achievable

  8. I’m trying this starting today so I can lose some weight for a party in 7 days
    I’ll tell you my finishing weight 🙂

  9. Hello Keith,
    You mentioned no running but would walking be okay? I’m 24 and trying to lose the most weight in this 7 day diet plan. I’m starting tomorrow.

      1. The difference is will it make my body leaner and clothes looser or will it be water weight and loss just on the scale with the physical results. Also if I follow this up with cutting calories and lifting will it stay off or it is like these emergency diets where you gain it back pretty much within a few days.

  10. Do I have to to eat all calls in one meal don’t think I can .am 4/11 43 and put 2 stone on due to early menapause

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