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.
=================
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.


hahaha keiths real funny NO straight talking no fuss haha…im a sugar freak..got about 2 stone to loose …will it work if i only have 800 cals of junk food? i try to be good but then i see a choc buiscuit and thats it…im limiting food for sugar…this is bad i know..but will ya plan with my twist work do ya think?
What kind of food in take should you have after the 7 days…. Thanks
https://www.fitmole.org/what-are-the-best-foods-to-eat/
I’m a model and I’m 5’11 and 130 lbs, used to be 120. I had a month off and fell into the habit of binge eating. I put on ten pounds, a lot of which is fat. I have over two weeks before I go back to modleling in NYC. Could this work for me? My usual diet was 1200 cals a day, so should I maybe go lower than 800?
I would not recommend this plan if you’ve had troubles with binge eating in the past. Take a more long term approach.
can we does this once a month??? I’m 4’11 and weight 180
no
Did you try this approach and did it work for you?
Im 213 pounds and 5’6. i am really overweight, This is the highest ive ever been in my life. I noticed you said the Treadmill wasnt great to use, why is that? Im a big fan of the treadmill because its in my house so i do use it often. I was planning on doing intervals and do 400 calories in the AM and 400 Calories after i do my 1 meal (Tuna wrap) in the afternoon and im not eating past 800 calories. Do you think that id still be able to lose 10-15 lbs doing that.
You are not going to be losing fat and water weight tho if you do treadmill because that counts as a cardio work out. So honestly if you want to lose the fat you need to pick up the weights and do a full body work out that way.
The treadmill is fine for everyone. The idea is if you are going to lift heavy you can build muscle faster then spending part of that time running.. Building muscle will help you burn more calories faster. That is the point made. Don’t let this article dissuade you from cardio. This is one of those crash diets for a week. For long term weight loss choose someone you enjoy so you will stick with it. Keep on running girl.
This question might be stupid, but wouldn’t I get loose skin from losing that much weight in a week?
Hello, I am 283 pounds and 5’9. I am overweight and I need to change that, will this help me, being that I lift weights almost every day? Also don’t get in mind that I’m just all fat, I have a very good amount of muscle mass and I think that’s why I’m so heavy lol, so yeah will this help?
great post thank you.
Hey,
Just wondering should I be counting carbs on this as well? I’m currently on Atkins at 20 g carb per day and I haven’t shifted any weight, my. Calories are currently between 1000 and 1300 per day, just wondering if I should be counting carbs still if I’m dropping to 800, currently no fruit obviously on Atkins but would like to introduce back
you’re going to be pretty low carb anyways, majority of your cals should be from protein.
Well I’m going to give this a go and see how I get on. I will be backpacking through Mexico in a few weeks, I want to be feeling on top form! Just a couple of questions…
I hit the gym straight after work (early evening), so would it be better for my 800 cal meal to be had at lunch or after I work out? Or would you suggest 2 meals on this day (400 cal lunch and a 400 cal dinner)?
Also, are you able to incorporate some cardio with your weight training or is this still counterproductive?
most people do better on one. I’d just do weight training to maintain muscle.
I am 180 pounds 5’0 I’m really over weight will this plan work for me???
Yes
frns
just do 40 min moderate excercise including 20 min of cardio and remove sugar from your food in every manner. i lost 20 pound in just 35 days by doing this.
Will I still lose as much weight in one week if I don’t do any weight training? (I prefer to run).
yes but you’ll lose a lot of muscle.