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Fasting / 5:2 diet

The 5:2 Thread number 43: Had too much Easter chocolate? Is the sugar monster chasing you? Come and join us in kicking the carb-cravings and getting back to healthy eating habits with intermittent fas

999 replies

BetsyBell · 24/04/2014 11:15

The continuing thread for those of us following the 5:2 fast or other forms of fasting such as 4:3, ADF, or daily 16:8.

The 5:2 diet was featured on Horizon in August 2012 and essentially requires you to fast for 2 non-consecutive days per week. The other 5 days, you can eat normally - or approximately your Total Daily Energy Expenditure (TDEE - see explanation below). 4:3 is the same except you fast on 3 days in the week. Alternate-day fasting (ADF) is just how it sounds; you fast every other day. 16:8 is another form where you stick to only eating in an 8 hour window each day, therefore fasting for 16 hours each day.

By "fasting", we mean that we keep our calorie consumption very low; around 500 calories on average for a woman, 600 for a man, on those days.

You'll find on these threads we use a number of acronyms. If you're new to the threads, or Mumsnet in general, they might not make much sense.

WOE/WOL = Way Of Eating/Way Of Life. We use this term instead of "diet" as many of us see this as something to do in the long term.

MFP = My Fitness Pal, a website or app many use for keeping track of the number of calories they're eating.

TDEE = Total Daily Energy Expenditure, quantifies the number of calories you burn in a day. This measure is best estimated by scaling your Basal Metabolic Rate to your level of activity. TDEE is critical in tailoring your nutrition plan to desired fitness goals. Here is a link to a TDEE calculator to help you figure out how many calories you should be eating in a day.

NFD = Non fast day.

NSV/LSV = Non scale victory/Lifestyle (change) victory.

Michael Mosley has a website to accompany his book on the subject. Please go check it out, as he's the whole reason most of us are here!

Lurkers and new starters: please just jump in and post - you'll find a lot of support here and we’re a friendly bunch.

Here is a list of links to get you started with this way of eating. Please let us know if you find a new article or some other information online:

Other Threads
All our previous threads can be found by browsing through the fasting section of the site.

Tips and Links : breadandwine’s resource for some of the tips and links that get lost in these big threads. In addition to sharing links, we try to condense some of our top tips for fasting there. Keep in mind, we all do this differently, so these are just tips, not rules. This might be a good place to catch up with us if you're feeling a bit lost!

Inspirational: eatriskier’s thread has some lovely inspiring stories which are worth checking out if you want some motivation to get started or keep going through a plateau. Please add your own too.

Recipes: frenchfancy has a recipe thread over here, please post any low-calorie recipes there so they don't get lost in these bigger threads!

Exercise: bigchocfrenzy has an incredibly informative and helpful exercise and fitness thread for discussion and advice on combining 5:2 with an exercise regime.

Maintaining: If you've been at this a while and are moving on to maintaining your goal weight, there is a thread here to discuss that.

Other links
This is a BBC article regarding Michael Mosley's findings, which was featured on Horizon - link to that programme here.

This Telegraph article comments on the diet and gives a brief overview by Dr Mosley himself, very informative if you're just starting.

This blog post gives some of the scientific explanation for why this way of eating helps you to not only lose weight, but improve your all-around health.

This link nicely demonstrates that there are many ‘right’ body shapes and types, because what we are actually aiming for is low body fat for fitness and health.

A study discussed here gives commentary specifically addressing the effect of this diet on obese people (both men and women), with regard to both health and weight loss. ("After 8 weeks of treatment, participants had an average 12.5lbs reduction in body weight and a 4cm decrease in waist circumference. Total fat mass declined by about 12 lbs while lean body mass remained relatively constant. It also mentions "Plasma adiponectin, a protein hormone that is elevated in obesity and associated with heart disease, dropped by 30%. As did LDL cholesterol (25%) and triglycerides (32%).")

If you’ve been researching IF you may have come across this article which is highly negative about women with BMI in the normal range. Here’s our response to that:

  • With a healthy BMI, those who want to be leaner will usually find weight and waist loss to be much slower than for overweight folk, since, less fat and inches are available to lose.


  • The women with healthy BMIs already had healthier blood sugar than the men in the study. Hence nothing really needed improving.


  • Women who have had health problems on IF were NOT doing 5:2, but the

much tougher ADF or 16:8, ^combined with heavy lifting (often multiples of body weight) AND
were often starting from already ultra-low BF 12-16% range.^

-Many were already missing periods or had EDs before IF, due to the low BF %, over-training and over-stressing.

5:2 is a gentler form of IF than ADF or Leangains and there’s plenty of anecdotal evidence from longterm 5:2ers, now with healthy BMI, who are continuing to have very positive results and experiences on this WOE.


A BIG THANK YOU to all who have been contributing. Most of us are learning this way of eating as we go along. All of the links above have been posted by others in our previous threads, and they've been very helpful.

A HUGE THANK YOU to Greeneggsandnicht for putting together all this info and resources into one concise OP text, much appreciated by so many 5:2ers!

Come join us, and tell us about your experiences with this way of life!

And lastly, a few FAQs/Healthy tips :

  • WATER: Start each day with a pint of water; and drink plenty during the day.
  • Hot drinks: No limits on tea or coffee any day, just note any milk / sugar calories on FDs.
  • FDs: Concentrate on protein & veg; avoid / reduce starchy carbs & sugar, including juice. Soups & stews are good; ready meals are fine. Old hands skip breakfast & save most cals for supper.
  • NFDs: No rules, but to improve health, try to cut down on added sugar, artificial sweeteners, fizzy drinks, junk food. A few treats per week are good though! Aim to average TDEE over NFDs each week, but you may under-eat by say 20% on 3 NFDs to save calories for weekend.
  • CLENCH for health: Men & women should exercise pelvic floor daily.
  • BREASTFEEDERS: Start with 1000-cal FDs; optionally, reduce to 700 cals gradually. You can return to 1000 if growth spurts or sleep-deprivation require more fuel.
  • SLEEP: Everybody needs enough sleep, or it may slow weight loss.
  • EXERCISE: Is healthy & can help weight loss if you you do NOT eat back exercise calories. Fasted training can burn more fat. HIIT works well with 5:2/IF.


  • Do NOT fast : If pregnant, under 21, have EDs, any illness, even a bad cold. When ill, your body usually needs more nutrients and less stress. So eat to TDEE & cut out junk, added sugar, fizzy drinks.
  • Check with your Doctor: If you have diabetes, any other endocrine condition, or if taking ANY prescribed medication (fasting may affect absorption rate).
OP posts:
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BigChocFrenzy · 10/05/2014 09:29

Not2b Have you logged a complete week and checked that you really have kept to your calculated TDEE on NFDs ?

In that case, could the the TDEE be too high for you ?
Many factors such as hormones, meds, previously having a higher weight etc can lower a real TDEE by 20%.

Also, have you calculated it by setting an activity level or do you add back any exercise or other cals ?

I would suggest you reduce your current TDEE by 20% for a few weeks and see if your weight loss re-starts.

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Darkhorsefor1 · 10/05/2014 10:36

Hi not posted all thread, been mad busy. Have lurked in a kind of skim read way.

not2obvs don't lose heart, just keep going. I realised the other day it took me a year to lose the last stone, it took 6 weeks to lose the first. I felt nibbley and a tad out of control at times. A day within my TDEE was a rare event, I felt hungry all the time. I recently seemed to cross some mental threshold, and now hit TDEE or less quite happily. I wonder if my body was trying to hit the breaks a bit. I reckon the organs can only cope with so much toxic lard to deal with.

Anyway, the breaks are off and I seem to be on some sort of race through the ten stones section.

Night shift workers, get used to fasting first, keep trying to eat less on your shifts. My early attempts at night shift fasts were awful. Now they're second nature, I fast on all my nights now, either eating to TDEE within each 24 hours or 500 if a fast day. I eat around midnight to 1 am, then nothing til teatime the next day. I sleep much better in the day. But, it took about 6 months to train myself to do this. I will add, my nights are generally quiet. If you're constantly on the go, find a routine that works for you.

southeast thanks for missing me! How was Brighton? I'm visiting there in June. Heard about a cafe called temptation. Do you know it?

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Not2bObvious · 10/05/2014 10:39

Yes BC I do stick to tdee and under - I do the whole Tip 20% under etc plan. I have a fitbit too and it ties in with the 1600 cal tdee when I have a no movement day. I calculated the tdee for my goal weight so it's a bloody good thing I don't eat the arbitrary 2000 allowance spouted daily by the world. On a great day where I've been super active, the most I've burned is 2200. I've used mfp for nearly 2 years, and I do weigh my food and I am honest - I'm no secret eater. I just lose at an agonisingly slow pace and quite frankly I haven't the time or energy to put anything else in. I'd like to take some stuff out, hence putting the scales away, bloody thing broke my heart. If mfp isn't helping maybe it's hindering, that's why I want to ditch it for a while

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BigChocFrenzy · 10/05/2014 10:54

Sorry to hear how tough is for you, not2b
The TDEE for some folk to lose can be miserably low, but it is positive you have not regained.

Maybe just aim to maintain for a couple of months, to give yourself a break. it is good you dumped the damn scales

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Gumblossom · 10/05/2014 11:53

I know some of the fit-nut folks on this thread have a fitbit - does anyone have a jawbone wristband?

I've just bought one (probably should have asked before I did Hmm ), but I am wondering if anyone has one and if they like it?

I am hoping it will motivate me to move more. I thought it looked reasonably stylish (as fitness devices go),so I should wear it all the time, but we shall see.

Had a fast day yesterday which was great until I got home, felt cold and ravenous and ate some lamb shanks I'd cooked for the family (instead of the fish I'd bought). I think I may have gone over the 500 calories, but I still think it would have been well under tdee, so won't get my knickers in a twist about it.I think I am being way too relaxed on NFD's and I'm not seeing the scales shift much. I have to try a bit harder at sticking to tdee.

Haven't had the chance to read the thread properly, hoping I will be able to in the morning.

squirreled, I love swimming, so I am very curious about the technique you mentioned. Can you share more info?

I tend to get into the water and just swim freestyle for 50 laps, starting slowly and building up to a fast pace, then down to moderate for ten laps and finishing. I should probably try to mix it up a bit, but I use the swimming not just for fitness, but it's a great way to de-stress and have been happy to stick at the same thing as it helps me relax - however, I'd love to hear other ideas on how to get the most out of the time I have in the pool.

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Not2bObvious · 10/05/2014 12:26

Yeah BC, thankfully I'm maintaining - as far as my clothes are showing at least since bastard scales has been banished. It was quite funny earlier after eating, I was wondering what the hell to do if I wasn't reaching for the phone to record my cals!
Thanks for the advice and reading. Gum I haven't heard of your device but I love my fitbit!!! I chose to believe it's accurate (you have to have faith in something) and as such enlightened me on what effort it can take to burn am extra few hundred cals. I also found it really encouraging, I'd check the dashboard, think my steps were a bit low and decide to go for a run. Grown up toyGrin Hope you enjoy your version

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SquirrelledAway · 10/05/2014 12:33

Hi Gum, here's an article that explains more about Ultra Short Race Paced Training. It's quite new in the UK, and goes against the grain of the standard Long Term Athlete Development programme, where athletes go through the Training to Train / Training to Compete / Training to Win stages which often involve long periods of endurance training.

The coach reckons it is effective quite quickly for sprinters, will be interesting to see if it works (first competition at the end of the month).

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MazzleDazzle · 10/05/2014 13:13

I really want to impove my swimming Squirreled. That sounds like just the kind of advice I need.

Darkhorse my experience is much like yours. After plodding along oh so slowly it's great when the weight starts rumbling off again with great gusto!

Went for a short run today, faster than usual though, and some yoga. Haven't eaten yet today, but off to make bacon and egg (apologies to any fasters!). I'm drooling at the thought!

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almostthereagain · 10/05/2014 13:20

Thanks for the info squirrel going to give it a go, will you update us as to how you get on?
not2 I struggle with MFP because I'm prob not using it v efficiently so I find it time consuming. I do however find it really focusses my mind. I guess give it a week & see how you get on.
Had a sneaky extra weigh in this am & am back to 9.7, yay for me!!Grin Now the real work starts but it has given me a good boost. Here comes target....Hmm

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BigChocFrenzy · 10/05/2014 13:46

FD today and I chose the gym with the all-day spin-athon (I belong to 2 gyms, for a greater range of classes)
They have a savoury buffet plus choc teacakes covering 2 long tables, all of which I womanfully resisted.
Smile

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TryItAtLeastOnce · 10/05/2014 14:16

Yeap I am on board. Although I had my week 1 and looking at week 2 and trying to fit the FD around events. After a successful first week I hope it continues!

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BigChocFrenzy · 10/05/2014 14:22

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

Bing bong, bing bong
Smile

ALERT: we have a new Thread44

Please fill up this old thread first

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

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Shatteredmamma1 · 10/05/2014 14:26

Well done bigchoc ! Grin
Thinking about what you said on an earlier post, about not adding back calories for exercise, should I have done a sedentary calculation for TDEE then? Thanks Smile

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MazzleDazzle · 10/05/2014 14:35

I set mine for sedentary for TDEE Shattered, on the advice of BC I think. Certainly, underestimate your activity level anyway.

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MazzleDazzle · 10/05/2014 14:44

Congratulations almost fantastic SV!

Well done BC on resisting the temptation to even have a nibble! Your willpower is obviously as firm as your biceps Grin.

Tryit it's fab that your first week went so well! Do keep posting on here to keep us up to date with how the next week goes. There definitely seems to be a link between the frequency of posts on here and success. If I am absent from the thread it means I am on a one woman scoffing mission.

Polished off lunch with a homemade malteaser slice. Yum. I defrosted one for each of us this morning. Glad there's none left or I would def. have been after a second.

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BigChocFrenzy · 10/05/2014 14:48

Shattered I recommend against adding back exercise calories estimated by a machine or online exercise calculator, because this usually seriously over-estimates intensity or real duration.

So, you can calculate your TDEE for your activity level - low / medium, insense or whatever - or boost weight loss by calculating it for sedentary.

If you are really keen, then calculate sedentary TDEE for your goal weight, instead of your current weight, which will train you how you will need to eat later for maintenance.

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BigChocFrenzy · 10/05/2014 14:49

Well done on your SV, almost
smile[]

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CiderwithBuda · 10/05/2014 15:30

Hi all.

I have been pretty good with food but not so good with wine! And had a huge bowl of ice cream last night. Im still supposed to be on the no wheat, sugar or alcohol. It's not going so well!

Salmon and stir fry tonight with the last of the wine and then back being super strict tomorrow until Wednesday which is my birthday. 50! Yuck. Going out for dinner wth DS and DH. Then on Friday I am going up to surrey to meet up with some friends for another birthday celebration. And then on Saturday I fly to Australia for ten days. Need to shift the New York weight before Australia!

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Darkhorsefor1 · 10/05/2014 15:40

bigchoc is this all day spinathon exactly what it sounds like? As in, you spend the entire day spinning?

This swimming talk sounds interesting, but my phone is in no mood for letting me look at links (its gettin
g ready for a trade in and seems quite cranky lately) so will break out the lap top later. I'm all for not spending too long floating around in a giant vat of bleach and wee.

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BigChocFrenzy · 10/05/2014 15:51

The spinathlon consists of 1-hr sessions from 11am to 5 pm, but noone does the full 6 hrs.

I did a warmup spin first, with my intensity set equal to a brisk walk - since that trainer does the outdated steady state spin.
I followed that with an HIIT spin, had a long break and have just finished with heavy lifting, so now I'm back MNing to chill.
Smile
The spinathlon was a good change in routine and kept me happily entertained on an FD.

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RachaelAgnes · 10/05/2014 16:06

Darkhorse - thanks for the night shift tips - will give that a go. I tend to graze (on crappy food) throughout the night, so will be interesting to see how I get on!

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SpottyTeacakes · 10/05/2014 16:21

Do you think I could do spinning? Would it kill my already dodgy hips?

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Darkhorsefor1 · 10/05/2014 17:39

rachael glad to be of help to fellow night worker. I used to take several bars of chocolate, and eat tonnes of toast. You know that sickly feeling you get about 5 am? I used to have toast to ward it off. I do still get it, but if you can sit down for a few minutes it passes. A gulp of fresh air helps too. After a few fasts your stomach gets used to you ignoring its pathetic attempts to make you eat at weird times of the day. I take peppermint tea with me. Is the pace at your place busy? Can you grab a drink when you like or have you to wait for breaktimes?

mazzle glad to hear you're losing again. Despite malteser bake. Must get round to making that one day.

There is still room in my life for a snickers bar. Realisation of the day.

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BigChocFrenzy · 10/05/2014 17:55

Spotty Spinning is much gentler on the joints than most other cardio.
Also, you can adjust the resistance and speed to your individual fitness, sit down as much as you want.

I recommend you try it, but tell the gym you want a class suitable for beginners.
Don't worry if other folk look much fitter; everyone sets their own level in spin.

For strength training, I suggest:
. Look at OP videos for more details on lifting exercises
. At gym, select the smallest dumbells to start with
. Start very gently and build up strength over several weeks
. Ask gym staff if you need help with anything

Bench Press
. Go to one of the weight benches.
. If it has a backrest, lower this to horizontal
. Lie on your back
. Lift the smallest dumbells above your head
. Keep lying down and bend your elbows 90 degrees to lower the weight vertically, i.e. until your arms are in the "hands up, I surrender" position"
. Repeat up to 8 times

Shoulder Press
. Adjust weight benches so the back to nearly vertical, or whatever suits you.
. Lift the smallest dumbells above your head
. Bend your elbows 90 degrees to lower the weight vertically, as surrender position.
. Repeat up to 8 times

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BigChocFrenzy · 10/05/2014 17:56

I mean see lifting videos on 52ExerciseThread2 OP

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