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.


im 19,5’4 and weigh 160 and literally CANT lose weight??i used to weigh over 200 and got it down to where i’m at now and i don’t think i’m just “plateaued” because it’s been almost a year at this weight and i’m not sure what im doing wrong. i drink over 8 glasses of water a day. i only drink water or coffee and i eat around 500 -700 calories everyday. i exercise every other day for at least an hour and i only eat healthy foods. im vegan so i drink soy milk and make up for the nutrients i don’t get with meat by taking vitamins and eating hella fruits and vegetables. and lots of rice cakes…. i think i at like a spoonful peanut butter the other day but that’s it??? will this work or what else should i try?? please PLEASE help!!
Probably because you’ve been eating too little for so long. 500 calories at your weight, for a prolonged period of time is no good.
I’m confused do we drink tea through out the day or during the dinner?
Whenever you want.
I am now 19 and my ht is 6’2 and my wt is 82 can u tell me that i should follow this diet or not .
You’re 6’2 and weigh about 160 pounds I assume? Why would you want to do this diet? That’s pretty underweight.
I am now 19 and my ht is 6’2 and my wt is 82 can u tell me that i should follow this diet or not . I want to loose belly fat and love handles everything is fine but i frustrated from my belly fat and love handles but i dont want to loose my muscles also so pls tell me ?
I am 19.my height is 5’7 and I weigh anywhere between 155 to 150. Ice tried everyhting to lose weight should I try it out? And if so what are some thing so can do since I don’t have a gym pass and no weights?
Hi Ima male weigh in at 370 I’m 5’7 can I do this diet
yes.
Why can’t you do it for longer than a week?
Calories are too low.
I’m 52 5’2 and weigh 269 lbs I’m not in hood health and i really want to lose bout 60 lbs before my daughters bday in Nov plz help me I’ve tried just bout every diet there is
Not to sound condescending, but have you actually tracked how much you ate and ate less consistently?
Will I still lose weight doing this I can’t exercise I have a broken leg
Yes you can lose weight without exercise. Though you will lose muscle.
Hello! Just wanted to say that I really enjoyed your article and will be trying out the plan soon! Just a few questions. Is this plan still effective if I am already keto adapted?
Do u have an 800 cal meal plan? I’m also wondering what the macros/day look like (carbs fat protein)?
Thanks so much!
Which part of the body loses fat first? Will my chin look thin?
What would happen to your body if you continued this diet after one week?
I am a vegetarian, what should I eat?
So you cant do it more than a week back to back? But can you can you do it every other week or once a month?
I would just do it once as a “jumpstart” then transition to something more sustainable.
What is the lowest weight you can be to do this diet?
This works best with people who have more weight to lose. If you’re on your last 10-15 pounds, you won’t lose 10-15 pounds in a week.