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24 or 36 ?

The many methods of intermittent fasting.

24 or 36 ?

Postby Shirley » 16 Feb 2013, 21:48

Hello everyone , please could you tell me is it ok to fast from 6 pm til 6pm next day . I did Monday and Thursday this last week but does it have to be 36 hours to get the full benefits ? Thank you
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Re: 24 or 36 ?

Postby Breadandwine » 16 Feb 2013, 23:37

Hi Shirley

The idea is to have one day where you eat a quarter of your calories - but you sleep before and after. I fast for 24 hours up until dinner time - and then have a <600 cal meal. I resume normal eating on the following morning - so the body is essentially fasting for 36 hours.
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Re: 24 or 36 ?

Postby LastChance » 17 Feb 2013, 00:18

I saw the subject and thought it was about BMI values!! ;-)
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Re: 24 or 36 ?

Postby Shirley » 17 Feb 2013, 06:04

Thanks for that , I thought I had read somewhere that 24 hour was ok !! . Back to the drawing board then ...
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Re: 24 or 36 ?

Postby carorees » 17 Feb 2013, 10:39

24 is okay as long as your total calorie intake over the week is reduced enough for weight loss and, if you want the other health benefits, there are long gaps between calorie intake. If you can work with those 'rules' to create a 24 hour fast, that is great.

A lot of confusion has been created by Dr MM calling the day when we have only 500 cals a 'fast'. A fast usually means no calories at all. But in the "5:2 fast diet" a true 24 hour fast followed by a light meal, done twice a week counts the same as spreading 500 cals out over an approx 36 hour period. Probably we need to call the latter a VLCD (very low calorie day) and keep the term fast for the period of no cals at all.

So, having a VLCD that lasts from 2pm to 2pm is not going to be very effective if you have a lot of calories before and after the 24 hours. On the other hand, having a 24 hour fast from 2 to 2, will be effective.

Am I making sense?
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Re: 24 or 36 ?

Postby Shirley » 17 Feb 2013, 15:01

Right I have got it now , no wonder I thought this was easy , so I have to go all night as well . My way the 6 til 6 fit in great as I don't want my two girls who are at the impressionable age to cotton on to what I was doing . As you say it's doable if I restrict calories throughout the week but I've done all that ( ex slimming world ) so i will the 36 hour starting tomorrow . Thank you very much for your valuable advice .
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Re: 24 or 36 ?

Postby carorees » 17 Feb 2013, 19:54

If you fast completelyfor 24 hours (6 to 6) and then have 500 cals you get a dinner that looks completely normal. If you have lean meat like chicken or fish and lots of veg you can cut down on potatoes to keep your cals down but cook some for everyone else. That's what I do anyway.
Weight at start: 105 kg; dress size UK 20
Target, 65 kg, reached 14 May 2014 - 18 months after my first fast
Current weight: 63.5 kg (trend weight); dress size UK 10
Maintenance weight range: 63-65 kg
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My story here
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Re: 24 or 36 ?

Postby Bee » 18 Feb 2013, 11:18

Oooops..I got it wrong then, I've been having light breakfast at 6am nothing till 6pm then a light meal. I think I need to bang my head against the wall a few times :)
Still it feels good and seems to work so maybe I'll just stick to it this way...any thoughts ?
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Re: 24 or 36 ?

Postby carorees » 18 Feb 2013, 11:33

Bee, it's not wrong! I was just pointing out that if you want to have a normal looking dinner so as, for example, not to raise questions about your eating habits, then having 500 cals in one go looks pretty normal. You carry on with what you're doing!
Weight at start: 105 kg; dress size UK 20
Target, 65 kg, reached 14 May 2014 - 18 months after my first fast
Current weight: 63.5 kg (trend weight); dress size UK 10
Maintenance weight range: 63-65 kg
My method: 8 months of 5:2, remainder and maintenance 16:8 + reduced carbs
My story here
Last update: 25 Sept
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Re: 24 or 36 ?

Postby Bee » 18 Feb 2013, 11:56

Thanks Carorees....I just checked the q and a....sometimes my dumbness amazes me :)
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Re: 24 or 36 ?

Postby Shirley » 19 Feb 2013, 08:55

Thanks Caroline , first fast over and tucking into breakfast this morning , didn't sleep to good but will look up other posts about that problem !!
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Re: 24 or 36 ?

Postby BlastFirst » 19 Feb 2013, 10:41

Shirley wrote:Right I have got it now , no wonder I thought this was easy , so I have to go all night as well . My way the 6 til 6 fit in great as I don't want my two girls who are at the impressionable age to cotton on to what I was doing . As you say it's doable if I restrict calories throughout the week but I've done all that ( ex slimming world ) so i will the 36 hour starting tomorrow . Thank you very much for your valuable advice .


I've been doing 24 hour "fasts" (i.e. 600 cals limit) and it has been working very well for me. As I've carried on with the diet I have found my eating habits changing exactly as Mimi described in the book - I can put up with some hunger in the day so have probably reduced calorie intake on my off too though, as the book also suggests, I never count calories on those days.
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Re: 24 or 36 ?

Postby Shirley » 19 Feb 2013, 21:56

Blastfast thank you , just to clarify you only do a 24 hour ? .
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Re: 24 or 36 ?

Postby mrsnju » 19 Feb 2013, 22:59

So if I wake on a fast day and have breakfast around 730am the. Eat again at tea time say 5ish then not eat again till the following mornings breakfast, what am I doing ?.!
Fasting Tues and Thurs,on my way to a skinny me.Yay ! :-)
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Re: 24 or 36 ?

Postby carorees » 19 Feb 2013, 23:19

mrsnju wrote:So if I wake on a fast day and have breakfast around 730am the. Eat again at tea time say 5ish then not eat again till the following mornings breakfast, what am I doing ?.!


Doing what suits you! Keep it up!
Weight at start: 105 kg; dress size UK 20
Target, 65 kg, reached 14 May 2014 - 18 months after my first fast
Current weight: 63.5 kg (trend weight); dress size UK 10
Maintenance weight range: 63-65 kg
My method: 8 months of 5:2, remainder and maintenance 16:8 + reduced carbs
My story here
Last update: 25 Sept
carorees
5:2 for life!
 
Posts: 6174
Joined: 10 Jan 2013, 23:33
Location: Worcestershire
Blog: View Blog (6)
Weight Lost: 42.1kg
Diet Started: 5 Nov 12
BMI: 23.10
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