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:

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.
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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.


What the fuck is wrong with you? This is unhealthy and you’re uneducated as fuck! I can’t believe you’re encouraging people to stave themselves, but reducing things that they need. WE NEED TO EAT 3 TIMES A DAY AND NEED 2000 CALORIES. This needs to be taken down….
Where did you get 3x per day? And where did you get 2000 calories? Please provide references.
. I understand that this diet is only a week long but can I eat regularly the next week then do the diet again the week after that
no
I don’t know how I came across this. but Im 14 and I weigh 90lbs, I only eat like 500-800 calories a day, but how many am I supposed to have? and am I a healthy weight?
DO NOT DO THIS IF YOU ARE 14!
I followed the plan the way it was suggested. Unfortunately I only dropped 5lbs. I am very overweight, was hoping to see more of a weight loss. I will try this plan again in maybe a month. Any suggestions?
no i wouldn’t. You still lost 5 pounds in a week, so it’s not a failure.
I am going to try this diet next week but after doing the 800 cals for a week I want to keep a diet going with more caleries but still loose over 2 pounds in a week how many cals do you recommend having further on?
why do you need to lose 2 pounds per week? You will never get long term results if you don’t have a “long term” mindset and just try to get results as fast as possible.
Kieth, the only time I ever ate more than 800cal per day was when I was pregnant or bulking, My estimated cal count for cutting works out at 1200 however I struggle to eat that amount now after beginning to cut a month ago. I’m never out of energy and still manage the gym and home workouts every day. I feel that I am actually forcing myself to eat every day. I feel so full and only eat 1 meal a day if i’m lucky. This rarely amounts to 800 cal either. Any ideas on how this will be effecting my ability to loose weight effectively? and if I will be able to build my muscle back again. seems like I keep getting close and almost see definition and then its gone and i just look mehh…?
how much do you weigh?
Hey there, if I am to stick to this diet for a period of time will my body not go into starvation mode-holding onto all the fat ect even with exercise?
Thanks so much for you prompt responses btw- sorry if you’ve already answered this.
It’s only 7 days so no.
Wtf???? This is soooo stupid. NO BODY TRY THIS DIET UR BODY IS PERFECT AND THIS DIET IS COMPLETELY WRONG even though it’s just a week eating under 1200 calories per day can be extremely harmful. I mean I hate it when ppl glorify diets bc it’s just stupid it just makes ppl who r at a healthy weight feel bad about themselves u might as well as just put a label on this diet and say this diet promotes eating disorders. If u want to lose weight u should do it in a healthy way like eating the right amounts of food, exercising, and having a positive body image.
If someone is at a healthy weight they probably wouldn’t be reading this. And why would you tell everyone that they’re perfect? I’m not forcing anyone to do this, it’s their choice.
As someone who is recovering from an eating disorder, this is nothing like it. The mindset is different. Only a certain percentage of people can even develop an eating disorder. This is an extreme Mental Health condition and multiple factors must be present. Eating this amount, with the foods he mention and heavy lifting for a week won’t give someone an eating disorder. It hardly mimics one. I am appalled that you would suggest this. You don’t understand why people develop them. You’re not standing up for anyone.
No, obesity is not perfect.
Fat bodies are far from perfect. Obesity leads to heart disease and diabetes along w many other problems. I’m tired of fat being glorified. It’s unhealthy and its gross.
Hi I am looking to atleast lose about 15 pounds in 3 weeks .My healthy weight is 65 and I am currently 82 I was wondering if I do this diet will it work because I have been on so many extreme diets and all it did was make me sick and tired that u can’t even go to the gym so I just end up with more weight ,please help in desperate need!!! Thanks xx
82 pounds? You mean kg right? How tall are you? And how old are you?
I am 5 3 and I am 19 does that help at all?
And yeah kg sorry,English is not my first or best language haha
Was wondering, how long must you exercise during this period of time? is it 1 hour? or 2 hour? or more?
45-60 min of heavy lifting.
I gained 5 lbs after i quit smoking and 7 months later i found out i was pregnant. After having my daughter, I gained another 20 lbs. I exercise daily but no weight loss. I drink a lot of water and eat healthy.
I am at a loss. Are there any fruits, grains or vegetables that should be avoided during this diet?
You shouldn’t eat any grains on this diet in my opinion. Only lean meats, fruits, veggies, and nuts.
Hi Keith, I’m 24 years old, I’m 5’6, I’m eating less than 900 calories a day, to be very exact I’m eating 857 calories & going to the gym and running a whole lot for example today I ran 21 laps on the track which is approximately 5 miles, yesterday I went on the elliptical for 25 minutes and did 100 crunches. This is my second day doing it almost exactly, I was kind of excercising a little before I started though, anyways, both of my parents were very slim when they were my age (don’t know if that helps) but my goal is to lose as much as I can by this Saturday, if I keep this up, you think I can lose 10 pounds? Oh and right now I weigh 151 and a week ago I weighed 154 lbs
I highly doubt it’s 857 exact.
I wouldn’t put too much of an emotional tie to your weight. Use this diet to shed a bunch of water weight, some fat, and to boost yourself forward faster but will you lose 10 pounds? Maybe…
Did you lose any ?
I gained 5 pounds after I quit smoking. Seven months later, I found out I was pregnant. After I had my daughter, I was stuck with another 23 lb weight gain. I exercise daily and eat healthy. I drink a lot of water and I rarely eat junk food. However, I can’t lose the weight I have gained. If I stick to this diet for a week, are there any food limitations… For example: are there certain vegetables or fruits that should be avoided this week? Salad dressings? Is there anything in a typical diet that should be avoided? I really am at a loss and I want to see results. Please let me know!!
no you shouldn’t avoid any fruits or veggies, infact you should eat more, unless of course you’re allergic. Nothing should ever be avoided completely, obviously there are foods you can’t eat as much of due to their caloric density.
Hello,
I want to start this diet tomorrow, but I heard that if you do this, you will gain the weight back when you start eat again. Is this true ?
maybe a little water weight but nothing noticeable.
How is it that I’m 6’1″ 280 and even when I count calories eating only 2000 a day I don’t lose any weight . I only notice weight loss when I get down to about 12oo calories a day . Is that normal . So how the hell are you suppose to keep off the weight when eating 2000 calories for me seems to make me get back up in weight.
that’s crazy, you don’t need 1200 per day especially at your weight. Are you sure you’re tracking correctly?
Why doing cardio is bad for this to work?You said no to tredmil.
b/c you’re in such a severe calorie deficit, cardio isn’t needed.
This is stupid fat bs. Why don’t you take your lazy ass and travel to one of the worlds worst poverty stricken countries, where people are starving their butts off and ask them how they lose weight?
People in poverty stricken countries are severely sick and malnourished. Not sure what you’re trying to prove here.