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 am 30 I’m 6ft tall and weigh 225 pounds is this the best way to shed some weight fast for me?
No one can tell you the “best” way. This is definitely a faster way to initially lose some weight, but if you’re not careful, you might rebound. To play it safer, try doing 1800-2000 calories per day at your weight for a few days.
Could you give an example of what you would eat in a day while doing this diet?
High protein – so a lot of low fat protein sources like chicken breast or protein powder.
As much veggies as you want and a few piece of fruit if you want.
Im 27 years old. I had 2 back to back pregnancies and found myself seriously obese. I can’t live like this anymore and I need to see real results. I’m 5’5″ and an embarrassing 305 lbs. My goal weight is 130 but I know it will take time. I generally eat between 1500 and 1900 calories a day and I walk about 3 miles a day. Nothing is happening and im growing frusterated and depressed. For real, would something like this help me jump start my weight loss?
If you’re legitimately eating 1500 per day and not losing weight, then something else is wrong. I would not do this plan.
Thanks very much for the wonderfull information. I have two inquiries.
1- why you don’t recommend following that 800 cal for more than one week?
2- how much water you can drink each day while following following the 800 cal or doesn’t matter?
1- read the article and comments
2 – AS much as you want.
Hey I’m trying to 800 calorie diet right now and some days i don’t feel like eating protein via meat so I’m taking a whey chug right now and have managed to hit 45g protein for 355 calories. However if I’m not eating chicken how many grams of protein should i aim for? If i go by the 0.7g per pound of weight that means I need 100g for 143Ibs body weight. However I’m not sure if that applies when you’re consuming 800 calories can you let me know please
Thanks in advance!…
When do you prefer to eat this meal,breakfast,lunch or dinner?
most ppl do dinner.
I just want to ask two questions.
1- can we drink water as much as we can or no.
?
2- why you do t recommend not following this for more than one week?
1 – yes
2 – dangerous when you go too low calorie for too long
Why is running a bad thing during this? What exercises do you recommend?
read prev comments.
Would it be okay to do this once a month? or like once every two months etc
I would use this extremely sparingly, once every few months.
Hi, I’m 16 and my weight is 225. What is the best way to loose weight?
Do not use this diet, first of all.
Really tho, the best action you can take is just focus on making healthier food choices. NO need to count calories or track protein. Just start by making some common sense “I should probably eat healthier stuff” choices.
So I’m 5’4 and I’m 165 lbs, should I do this?
Give it a shot, I’d stick closer to around 1000 calories/day .
Why can’t you do this diet if you’re under 18?
you’re too young to be doing something this extreme.
Just wondering are we restricted to just one meal a day ? And if we have a meal at dinner are we able to have smoothies for breakfast??
no that’s not recommended. You want to get the majority of your cals from protein.
The most effective way to lose weight is to burn more calories than that you are taking in through foods. Have plenty of water and avoid fruit juice and sugary drinks as they contain lot of calories. You can also use herbal pills to burn fat from the body and help you to reduce weight. For details, visit: weightloss-pill.net
I already eat way less than 800 calories a day and I walk about 30 minutes a day and do a few exercises everyday and I’m losing a little bit but not much. I have a goal of weighing 105 pounds and right now I weigh 300. What’s the best way to lose weight fast.
You’re talking about a massive weight shift. And losing over 60% of your bodyweight…not even sure where you got 105 pounds from.
First stop trying to lose weight fast. It’s not going to happen.
And if you’ve been on 800 so long and haven’t lost any weight, then something is wrong….you likely damaged your metabolism from being so restrictive. I’d go back on a much more moderate approach to dieting.
I am 30 years old, 5’1 and 165 lbs. I gained a lot of weight during the last semester of school and I really need that push start to get back into shape to get back on track weight wise. Can I that is both female and short go down to 600 kcal a day for a week while doing excercise 3-4 times a week? My goal after that is to go back to my 1100 kcal a day diet and excercise 3-4 times a week to keep up the process. I have a meal plan with 600 kcal a day which consists of tuna fish, cripsbread (for fibers), chicken fillet, rice and homemade salsa.