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.


Hello.Im 49 5,7 I was 100 kilo now 94 by cutting out beer and junk food past Month. I want to get to 85 Kilos. My food intake each day is Musili for breakfast , a boiled potato at Lunch time then Chicken,Fish or Meat with lots of Vegi at around 5pm. That’s it.I don’t feel hungry but read so much about its not enough calories and could not the right way to go about it.Im not exercising but from Monday I will be playing Golf 5 days a week for a month. Am I on the right track to get to the weight I wish for. Thank you.
You said that you recommend working out 2-3 times per week using weights. For half an hour or an hour?
typically about an hour assuming the workout is intense enough.
My name is Nicole, I am a 33 yr old female who had the gastric sleeve March 26,2014….during surgery my splenic artery was sliced causing a splenic infarction and my spleen began to die. Following my surgery I was in a great deal of pain, initially they thought my pain tolerance sucked and I was full of shit. However after 8 hours of ice packs PCA pump of 8 mg Dilaudid an hour they decided an CT was in order. Report showed my spleen was dying and though most people don’t know they’ve had a splenic infarction I knew something was wrong.
My surgeon sent in an infectious disease physician to discuss vaccinations that I would require and my compromised immunity for the rest of my life after my splenectomy that was being scheduled for that day. I was given every vaccination under the sun, went into surgery and came out ok but with a drain tube. I went home and was ordered to follow up in 7 days with my surgeon, on day 3 I had a really weird pain and could tell something was wrong. Off to the ER I go….CT scan ordered….doc comes in to tell me my new staple line in my stomach from sleeve had a leak….I was releasing everything from my stomach directly into my body, staples had come out internally due to an abscess from spleen. I was becoming septic by the minute…that night my temp spiked, heart rate through the roof, couldn’t breathe…..I was transferred to ICU….from there I ended up on life support for 11 days….
When I woke up I was on oxygen, I had a drain tube in as well as a J-tube for nutrition….my 267 day stay at the hospital was just starting. I won’t bore you with every single days update but from that first time, I’ve had 13 more surgeries, life support 3 more times, developed anorexia, addiction to narcotics (off all medicine now) sucidal thoughts, And I live on 800-1000 a WEEK. Not a good idea, my doctors want me to do 800 calories a day for the rest of my life….I started at 367 lbs at 31 years old I am now 33 and weigh 131 lbs 5’6…..800 calories a day not exercising is doable and functional…..I work out and eat 1000 calories a week…granted I get IV hydration therapy and end up in the hospital often with malnutrition and a PICC line but I have mainted this weight and not been in the hospital since December. I am not physically able to consume more than 2 tsp of food at a time….I’ve tried everything!!!! Can you please suggest nutrient rich foods so I can eat minimally but get 800 calories a day not a week please!!!!!!
I wanted to get healthy for my children not kill myself.
I am not a doctor and your situation seems very complex. I would avoid this diet for now.
Does it matter what u drink or do you have to count them calories in as well. I just drink water, crystal lite, coffee sugar and creamer, green tea, and diet soda. Pleaseeeee help me out with adviceee!
Coffee is fine but i wouldn’t go overboard with the cream.
Losing approx. 1 pound per day, just following Dr. Alwin Lewis’s plan called The Five Bite Diet. You lose a lot of weight the first week (mostly water weight) which settles down to around 1lb per day (sometimes more, sometimes less, everyone’s different). He has a book on amazon, as well as a few interviews on youtube. So far so good! Lost 34lbs last month, have since kept it off.
WELL DONE!! That is incredible! Really impressed going to start this tomorrow. No more messing and eating.
I eat approx 600cals a day, not intentionally and work out 2x a week and have only managed to maintain 180, have been doing this for a really long time, as in months. My food intake is normally steak, broccoli, I drink green tea, occasionally have beefy foods, but I avoid bread and dairy.. any more advice?..
yes, stop eating 600 cals per day. Why in world would you do that?
Is there a way to post a picture of what I look like
You can upload it online and post a link in the comments or email me.
I am 18 years old looking to get rid of this stubborn fat fast and weigh 184lbs. I always fail when it comes to diets but I REALLY want to get rid of my, as my siblings call it, “pregnant belly”. I really don’t care about losing weight anywhere else on the body. I just want to lose my stomach. Help?
Can you eat dairy?
ya
I workout twice a day…i do 1 hr weights 1 hr cardio. Than I do 30mins weights and 30mins cardio. I take about 800 calories. I even take milk of magnesia everyday at night so I could use the restroom in the morning. I also just got bypass surgery and I’ve been stuck at 240 for a month already?? What am I doing wrong?
Training too much and eating too little. There’s a reason why I say don’t do cardio.
I have been on atkins phase 1 for 2 months ive lost 27 lbs and i have stopped loosing for 4 weeks now im at. Loss i dont know whats wrong and i need help !!!
Do you have any suggestions as to how to prevent your self from eating throughout the day? You mention coffe and green tea, but does drinking loads of water to fill your stomach work?
that works too.
Best thing is to stay busy…so find a hobby – learn to knit, read a book, visit museums, masturbate.
If you have large amounts of weight to lose and you do this for a week then switch to more conservative loss how long should you wait before you repeat another week?
Quite a while….4-6 weeks.
Well this article was just great. I just hope it works as well as it reads. And also, is an Atkins type diet what I should be shooting for?
sort of…your goal is to get a crap load of protein to maintain muscle mass but still get some fruits and veggies.
I’m 36, female,5ft.3in., and weigh 209 lbs. Getting married this august. Want to lose major weight..and just learning how to exercise for real..any suggestions?