20 lbs lost within 2 weeks

Losing 20 pounds of fat in 2 weeks would mean burning 35,000 more pounds than you take in a week. Or a 5000 calorie deficit each day.

It is not possible. There is no need to argue as to whether it's unhealthy or not.

o_0

Unless you currently weigh 600lbs, I'm going to go ahead and naysay.

Well... let's do some math. In order to lose 20 pounds of fat (as opposed to water), you'd need to create a deficit of 70,000 calories. (That's 3500 calories per pounds times 20.)

To do this over a 2 week period, you'd need a 5000 calorie deficit per day. (That's those pesky 70,000 calories divided by 14).

I have no idea what your stats are but, presuming a TDEE (Total Daily Energy Expenditure) of 2000 calories, you'd need to eat nothing. You'd then need to find a way to burn off another 3000 calories per day to boot... while eating nothing.

This is not possible and it's not healthy to even attempt. Don't do it. Read the helpful threads and stick with a moderate deficit.

ETA: typo

NextRightThing714 wrote: »

Well... let's do some math. In order to lose 20 pounds of fat (as opposed to water), you'd need to create a deficit of 70,000 calories. (That's 3500 calories per pounds times 20.)

To do this over a 2 week period, you'd need a 5000 calorie deficit per day. (That's those pesky 70,000 calories divided by 14).

I have no idea what your stats are but, presuming a TDEE (Total Daily Energy Expenditure) of 2000 calories, you'd need to eat nothing. You'd then need to find a way to burn off another 3000 calories per day to boot... while eating nothing.

This is not possible and it's not healthy to even attempt. Don't do it. Read the helpful threads and stick with a moderate deficit.

ETA: typo

It's impossible, as explained above, not just extremely dangerous to even try. So you won't find anyone who has, especially on MFP, where promoting dangerous low calorie diets are against forum rules.
You should spend your time and efforts on learning how to lose weight in a healthy sustainable way. Why would you want to risk your health in this way?

Listen. Accept the truth if you want or don't. We're on your side here.

Anyone that tells you that you can lose 20 lb in 2 weeks is lying to you and likely trying to sell you something.

Pinterest has a lot to answer for! I blame all its posts of 'how to lose 20lbs in two weeks' as pure cr@p and people are being hugely misled.

20lbs in 10 week's would be dang hard and for a lot of people very unheathy.

I'm waiting for some eejit to pop in to this thread declaring that they indeed lost 20lbs in 2 weeks. They will be fibbing so take any such replies with a pinch of salt.

This would be the same as saying, "Listen, I need to flap my arms and fly from Buffalo to Rochester. I don't want to hear from naysayers, just from people who have figured out how to do it."

Plug your stats into this calculator: https://tdeecalculator.net/ Leave the body fat % blank, you don't need it. It will tell you approximately how many calories your body burns in a day. In order to lose 1 lb per week, you need to eat 500 cals less than this number per day. In order to lose 2 lbs per week, you need to eat 1000 cals less than this number. And in order to lose 10 lbs per week, you would need to eat 5,000 cals less than this number per day, which is literally impossible. And it is not recommended to eat less than 1200 cals per day, anything less should be done under medical supervision. Please don't cause yourself new health problems trying to correct the one you already have. :flowerforyou:

Really bad bought of stomach flu. Could't keep any food down, and got really dehydrated as everything was coming out both ends. Exercise consisted of running to the restroom, and crawling back to the couch.

spicyginger2006 wrote: »

I think this is possible in two ways- you're completely sick and not eating because you're too sick. Or your fasting or juicing to the point that you are losing a *kitten* ton of weight that you will immediately gain back when you eat food again. Not healthy and nearly impossible. I wouldn't try it. I have lost 10 lbs in a month before and it entailed working out everyday and strictly sticking to my calorie allowance.

Nope. Not "nearly" impossible. Literally impossible.

A 200lb person running a marathon (26.6 miles) at 8mph (3hrs 19 min 30 sec) will burn about 4000 cals.

So, crank out 18 of them in 14 days, while only eating around 2000 cals each day, and continue going about your normal day, and you should make it.

If you find someone who tells you it's possible, PLEASE PLEASE ask them this follow-up question:

How long did you keep it off?

You might find someone who was very obese and who did something crazy to manipulate their water weight in order to lose that much. Maybe. Doubtful, but maybe. I'd bet my own money that they didn't keep it off, though.

Ddonna82 wrote: »

Like I said if you have lost 20 pounds within 2 weeks I would love to hear from you.. If not then don't reply.. I'm currently exercising and counting calories... But that's not my point..it was a question to those that have done This, if their are none then so be it.. My friend has lost 100 pounds in 6 months, she told me within the first 2 weeks she lost 22 pounds but she did shakes.. So I know that it's possible so I wanted to here other things others have tried and if there's is none then so be it!!!!

Then why are you on here asking? Why not just have your friend walk you through how she did it? Why do you need further validation from a bunch of strangers on the internet? This is just weird.