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.


Would you recommend the one meal a day of 800 calories to be done for breakfast or dinner? Just looking for the best results.
ppl do best with dinner
My weight is 85kg.and i have to loose 30kg at any how…. Is this diet will help me???? Or do you have any other suggestions for me??
My weight is 136 lbs, i jog for 15 mins in the morning and go to gym in the evening EVERYDAY.. i only take 2 meals a day,.. is it possible to lose 20 lbs in 1 month? And if not can i please have some advise from you? Thank you so much
depends on your starting weight, but in your case, no it’s unlikely since you’re not that heavy to start with.
you know…I have acutally tried this once before reading and i lost just about 15 pounds. I did solely running with a 500 calorie intake for a week, and then after that week i did heavy weight lifting. if you really do it and stay committed then work your way back onto a regulated diet plan you will be looking at a better you.
I’m currently 154pounds and I want to lose weight at least 40pounds, I’m trying the 900calorie meal plan and i’m doing 1000 jumps on rope a day, and drinking water alot , how much it will take for me to loose these 40pounds ?? And should I continue my diet for over than a month
I need to loose weight very quickly, please any advice ??
I’m sorry English is my third language 🙂
you are not gonna lose 40 pounds in a month. Stop looking for quick fixes.
ive been losing about 3kg by just following a 10min workout every day, doing 10k steps (just walking my dogs) and trying to not eat too bat foods, not been that successful lol. im a 14 yr old girl btw, age and sex matters a lot. i wouldnt advice you to eat under 1500 kcal per day because its just gonna wear your body out and make it go into starvation mode (youre metabolism goes downn and its hard to lose more weight). so just eat 1500 calories or more (max 2000) and do about 1h of exercise, both cardio and strenght and walk a lot, or go on jogs every day. ive been doing this and already lost a lot. i was about 70kg, on the edge of being overweight, but now im 67kg, after 15 days :). you dont have to be this ridiculos about weight loss, its not healthy and youre destroying your body by eating under 900, eat fruits and shit in bettween your meals at least, and drink water A LOT because it ups your metabolism.
hope this helpd 🙂
Ayo Hit me up on my Insta: the_notorious_saad
Snap : saad_rafia
does this really work tho??
god i hope so
The reason you lose muscle when you do cardio training and only have 800 calories per day is because of the intensity and the energy reserves your body uses and how. If you are already at a calorie deficit, you’ll most like be ketogenic and so your body resorts to fats first to break down, but with the intensity of cardio being sustained for a longtime, eventually the easily available fats, ie what’s available in the blood stream, and can be quickly broken down and fed into it, they run out and it’s quicker for your body to create energy by breaking down protein as it’s right there in your muscles, where the energy is needed. If these people were to walk instead of running, they also wouldn’t lose muscle mass. The issue with weight lifting and eating a high protein diet, whilst also on a calorie deficit, is that a) it’s harder to maintain relative to doing a long walk every day, b) if you injure yourself lifting, which is highly likely with such an energy deficit, your body may not have available the necessary parts to heal itself, and finally c) your body cannot be anabolic or catabolic at the same time, ie you can’t lose fat and build muscle at the same time, so your much better off doing six weeks of a calorie restriction whilst doing long daily walks, then doing six weeks of weightlifting and ensuring that when you eat before and after a workout, you replace the energy used immediately, and ensure adequate protein to repair the torn fibres. That’s just my opinion, so take it with a grain of salt.
I’d like to know what is Keith’s response to this comment.
has anyone any advice i need to lose weight in 2 weeks about a stone. thank you.
Can I do hot yoga instead of weight training in this scenario? It’s non cardio, but should still be strengthening.
Thanks!
Not ideal. I wouldn’t go so low cal if you do
I love coming on here since you answer every person’s — ahem legitimate — question. It’s also fun to see the latest way people are scheming to dance around realities of actually doing it. I’ve made it as long as six days, and did a few three day stints. If ever I get through seven… How long do you recommend for recovery between the seven day anti-binges?
Like i said, this is not a quick fix. It’s just a tiny “jump start”.
Do this for 7 days then go on a more realistic, long term diet.
Question! So I’m generally an active guy, I’m on a calorie deficit just now as about 230lbs but I do train heavy weights plus cardio 3x a day then a longer run 2x a day and try to hit 10,000 steps everyday outside of this… you know for fun… because that’s fun…. Anyways, say I try this for a week, what do you suggest I do actively? Keep the heavy weights going, bin the cardio…. and reduce the walking distance? or maintain at 10,000 steps? or see how I go and if I feel I can’t do 10,000 that day stop?
Thanks for the help bud! Enjoying your knowledge!
steps are fine, id just ditch the cardio if you’re going to increase the deficit.
How can i do this diet and lose 10 pounds a week and to e my body as a girl can ypu name some exercises ?
Hello,
I’m a fourteen-year-old girl and I weigh around 67 kg, I know that that is very close to being overweight. I would like to get to 60kg quite fast. I don’t hate my appearance and I do have quite a bit of self-confidence, but I’m not blind, I look bloody pregnant. My stomach fat is extremely annoying and I want to get rid of it. I have very bad self-control and can’t stick to ditching chocolate or cola or chips. I also overeat when tasty foods in front of me. do you have any tips to help me? I walk around 10k steps a day and do fast exercises almost every day (I’ve had trouble following it every day.)
there’s no easy answer besides to stop eating so much junk food. Throw it out or portion things out. Talk to your parents or someone older you trust and ask them for help. Do NOT do this diet.
Awesome, thank you. Finally something to work with instead of lectures from nay sayers. A jump start is what I’m looking for, this seems like the right fit. This will be my week. Cheers!
If I do this week plan of 800 calories a day, instead of lifting weights, I do Shaun T’s Cize workout, twice a day, each lasting 30 and 40 mins, will I still lose 10-15 pounds? I have weights but they’re only 3 and 5 pound weights, along with ankle weights. I just had my second daughter and am struggling to lose the baby fat as quickly as I lost it with my first daughter. I’m jus curious if I’ll still get the same results with a different workout ️♀️
I have competed in 3 bodybuilding shows this year. I am a 5’2 female and currently 126 pounds. My last was stage weight 105 in August. I have gained 20 pounds in just 2 months due to binging/restricting cycle. Since I was in a caloric deficit for 6 months this year, my metabolism is very low and probably damaged and has adapted to being in a deficit and the intense exercise. I am really wanting to lose just 10 pounds and maintain from there. If I follow this plan, do you think I will damage my metabolism even more?
if you are competing, do not follow this plan. Sounds like you already have bad experiences with VLCD.