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.


I’m 18 years old, 5’8 and weigh 180 pounds. I”m trying to get down to about 165-170, then work my way down to 160 with a more moderate weight loss plan. Should I do this plan to get me down to 170ish?
This will prob get you to a steady 177-178. You’ll initially drop down to 170 but it will largely be water, and you’ll regain some back.
Keith I am a female who is 36 years of age 5’9 245lbs… If I go a whole day without eating than wait till 6:00 to eat my 800 calorie menu… Will I gain weight by sleeping on that food
No that never happens unless you’re in a calorie surplus.
I’m about 5’9 without shoes on and 5’11 with shoes (crazy how people tell you how tall you are) but anyway I’m 228 and I have to lose about 2% for the army my eating habits are very small I like to think less than 1,000 cal do you think jogging little bit doing my sit ups and push ups will get more than 2% off?
I have been eating 800 calories or less for 4 weeks. I have been losing at least 1 pound a day. But this weight loss has stopped. Does rose wine hinder weight loss? Do you know why the weight loss would stop?
4 weeks is way too long, you’ve likely damaged your metabolism at this point. Definitely up your calories back to maintenance for a while.
so basically you’re saying we can lose 15 lbs but mostly water weight that we would end up putting back on?
a good chunk will be fat, enough to be visible.
I’m 19 years old, 5’11 and weigh 230lbs. Can I get down to 200 by doing the 1st article?
No doing this by itself till you get to 200 isn’t advised. You can do it for a few days, but not long term.
I’m 18 140lb and 5’3 I need to loose 20 lb and hope this works. Wish me luck
I’ve been biking 12 miles a day and walking with the kids at least 1-3 miles a day depending on the kids getting cranky. I’m not losing weight. They just told me I’m a type II and to me that’s a death sentence. I don’t want it part of my life. I’ve lost 74lbs since having my second child, she’s 20 months old(they’re 13 months apart) and I’m still breastfeeding. I need this weight off of me NOW!
I’m only 5’0″ I’d like to be 105-115lbs I gained a little weight and I’m now 193lbs I was 182 and I maintained for a few months but
I followed an 800 calorie diet for about 3 months a year and a half ago and lost 60lbs and a good deal of hair. It’s extremely effective for quick weight loss and that can be blinding. Seeing those pounds melt off everyday is intoxicating, but I just want to stress further that none of you should keep such low calorie restrictions for an extended period of time. You will pay for it.
What if you don’t eat in a whole week and just work out , will you still loose weight if so how much pounds?
that’s super stupid.
You won’t lose weight, you’ll end up in hospital. Don’t be a dipshit. You need food to survive.
Can I workout more than 3 times?
I would not.
My name is isabella I’m 14 and I’m 135-140 I need to loose 35-40 pounds by the time school starts back up so august 15th ish any advice?
no no no no no. Don’t do this.
Hey! I’m about to start this 800 shit again and it works. Last time I didn’t do weights I did the cardio hell I am hoping this will work the 2 time. You wish me luck!!!
i weigh 130 and im 5,2 i want to get to 110 so 20 pounds i want gone im 16 is the plan necessary for me?
no DO NOT DO THIS IF YOU ARE UNDER 18.
Hi im a girl im 21 my weight is 150 pounds and i want it to be 110 ,do u have any plan for me that woould help get rid of the weight in two months ? Will this one here help me if i extend it to more than a week ?
You will not lose 40 pounds in 2 months, that much I can guarantee. I recommend taking a long term approach.