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.
Hello, so I was researching around for this kind of information, and I have two questions.
1). What would happen if a person went without any food for a week, and still did all the same exercising? Would they lose the same amount?
2). I am in Track and Cross Country, so I run about 10 miles a day, could that substitute for the weights, or should I add the weight workout to my schedule also?
Thank you.
Also, I am 15 years old female, I am 5 ft. 4 and I weigh 113, but I would like to
come down to about 95-ish and stay there.
1. they would likely feel like complete shit.
2. you should add in resistance training. You should not do this if you’re running 10 miles per day.
3. YOU ARE 15! DO NOT DO THIS!
Can you give me an idea of a meal you could have or a few so I don’t eat the wrong thing?
Lean meat (chicken, lean beef, turkey), lots of veggies, some fruit
I’ve lost 22 pound in a month by following simple plan. Diet is 80% and work out is 20%. There are many nutritionist on yourtube , however I prefer following GURU MANN. He has many weight loss programs with proper diet. You can check that on youtube.
I’m 13 years old and I weigh around 45 pounds. I know I shouldn’t be doing this diet (and I’m not) but I wanted to ask which diet I should do instead.
you should be talking with your parents.
Hey, if your 45 pounds that’s really underweight. Are you perhaps struggling with en ED? :/
I’m 14 and I’m going to do this and I’m really exited
god dammit no! don’t do this.
homegirly if yr fourteen you should NOT weigh 45 , im 15 and a good 127. im also skinny. like you needa gain weight, treat yrself. eat out for a good month. eat your gosh dang feelings girl, then after you get around 110 eat healthier. praying for ya 🙂
How do you transition after? ie whats the appropriate moderate diet to go on after that won’t make you gain it back? for a woman, is moving up to 1400ish in the right range?
Trying to quickly shed the holiday weight gain to get back on track with my weight loss
you transition to a more sustainable diet, typically your daily calorie intake will be around 10-12x your bodyweight in pounds.
How much will I lose if I didn’t workout at all?
well you’ll likely lose more muscle. And overall it’s just not good to not exercise.
Hey, I’m 14 (almost 15) and my height is 5,2 and my weight is 165 pounds the doctor says I have to lose weight before February. Is this a good plan for me?
no dont do this. you aint even done with puberty. Cut out junk food and talk to your parents about eating healthier.
When should I eat? Am or Pm?
if you are doing this, i rec pm
How much weight could someone lose if they didn’t have any calories for one week???
dont do that, dawg.
How long should I lift weights. I’m a female that’s obese and I work out at home.
I’m 49 yrs old 5 8″ and weight 260. If i do not eat for two days and only drink water will it be safe?
PS also will i lost alot of weight from doing this?
Do calisthenics work? I’ve never been a fan of weight much, but will do it if I have to. I just want to try this diet because I really overdid it during holidays and new years LOL
And to all the teens asking about this diet…..DO NOT DO THIS DIET! You are still growing and will regret it. You do realize that you can stunt your growth…right? It’s normal to be a little chunky sometimes, it’s part of puberty. Throughout high school, I had thicker thighs. But after 18…I grew taller and now my thighs are slimmer because I grew, redistributing the fat, making everything even out. I’m a female by the way, and females generally have thick thighs and hips during puberty. I promise, it will get better as you grow more. Hear that ladies? Why would you stunt your growth and not reach your height potential? Is it seriously worth it? Think. Stop putting this dude in trouble.
By the way…dont forget to answer my question!! :p LOL
About how many pound can you lose if you do this diet right ?
I am 14 years old and I weight 61 kg and I wanna lose weight so bad, what should I do?
stop eating candy
To all teens: Don’t do any stupid ass diets…no matter how thick your thighs are, how heavier you are etc. You’re still growing and sometimes thats just a part of puberty. Its sucks, I know, but hold on. Throughout high school, I always had thicker thighs. Then as soon as I turned 18 and 19, I was still growing and my thighs actually look leaner now, because my legs lengthened and all the body fat even out. Dont put the dude in trouble, and just focus on 3ating healthier. I know fast food and candies are tempting at this age, but this is the best you can do.
Btw, love the articles man. They always make me laugh and get info too.
and yet your trying to find ways to lose wait it sound like to me should use your own envise
I’m doing this because people at school will make fun of me because of how I look and I don’t like my body so I’m gonna do this and I’m going to use for three months straight and I will try to use as much weight as I can wish me luck