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Fasting / 5:2 diet

Talk about intermittent fasting and 5:2, including what’s worked for others. Mumsnet hasn't checked the qualifications of anyone posting here. You may wish to speak to a medical professional before starting any diet.

The 5:2 thread number 28 - Come and join us! The threads may be getting on a bit but the new starters keep us young and fresh!

986 replies

BetsyBell · 10/10/2013 10:49

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 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 calculator to help you figure out how many calories you should be eating in a day.

NFD = Non fast day

NSV = Non scale victory

Michael Mosley has a website to accompany his book on the subject. Please go check it out, as he's the whole reason these threads started!

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:

Our previous threads can be found by browsing through the fasting section of the site.

Another thread which breadandwine has started is a good 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!

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

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.

Here is the link to the BBC article regarding Michael Mosley's findings, which was featured on Horizon.

There's a link to the aforementioned Horizon programme here.

A blog post here 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.

A Telegraph article which comments on the diet and gives a brief overview by Dr Mosley himself, very informative if you're just starting. (I highly recommend this for an overview)

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 12.5 lbs reduction in body weight and a 4 cm 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%).")

Something to consider if you are currently your ideal BMI: this appears to suggest the benefits for women at a lower BMI might not be seeing the same health benefits that are found on men at their ideal BMI.

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 diet!

OP posts:
Beebs1987 · 21/10/2013 23:18

Hey peeps,

End of successful and stressful fast day here at 510 cals. Been so tired and had no energy today. Worried that I'm not eating the 'right' foods while fasting but I just grab whatever is easiest as no time to prepare/cook with a clingy 6 month old baby!

Does anyone else get really cold on FD's?! My hands and feet are like ice blocks and can't seem to warm them!

Thinking of adding another FD next week to accelerate weight loss - aiming for a stone by xmas. Anyone else done this and if so what results did you have?

rubbishfamily333 · 21/10/2013 23:19

Also I've checked my tdee on two different websites and one is giving me a lot more calories than the other.

The one that someone linked to on the welcome to 5:2 thread have me more calories Confused

BsshBossh · 21/10/2013 23:19

BigChoc what're you planning on eating tomorrow? My DD had corned beef and cucumber sandwiches today for the first time and loved them so much she asked for a second round, which of course has made me want them too now - so that's my lunch sorted. Dorset spelt muesli for breakfast (late brekkie after fasted morning gym session) then a veggie-packed tuna and wild rice salad for dinner. I love meal planning on FDs - keeps me going!

BigChocFrenzy · 21/10/2013 23:23

rubbish 27.1 is merely overweight, don't worry, no problem.

52 handles all shapes & sizes. People here have started at much, much higher BMIs; others like me want to reduce an already ok BMI.

Night all.

BigChocFrenzy · 21/10/2013 23:36

Bssh You are well-organised: I should plan too, to avoid a piggy NFD again.
OK, I'll try a 120 cal protein mini-breakfast (not a snack, tip) to avoid 3 big meals on an NFD.
Big lunch at our excellent work canteen (maybe pasta with salami, tomato, olives, & chilli oil, plus boiled egg salad, then rice pud).
Tea is oat bran & flax meal with almond milk & cinammon.
No training, as it will be my rest day. So I plan a hair tint, a leisurely shower, followed by a facial: lovely girly evening.

wrigglebum · 21/10/2013 23:49

Hmm, pub quiz at local and I've just drunk more in one evening than I normally have in a fortnight. Three black cherry bulmers. Out to the pub tomorrow night too, not going to be a good week calorie wise but a yummy one.

AngieM2 · 22/10/2013 02:38

Question to the exercisers. ...there are some big TDEE's on here (and I'm feeling jealous as mine is 1660!). Have worked mine out as sedentary (which I am not). I actually do several gym sessions a week - usually 2 hour sessions of spin, pump, HIT etc. So do people set as sedentary then add their exercise calories in MFP and eat some back or should I change my TDEE to reflect the excercise I do? Would just add that my TDEE is fine usually but woefully inadequate on a Friday and Saturday when I need gin!

AngieM2 · 22/10/2013 02:41

cuckoo please see your GP and get referred for your pelvic floor. No woman should ever pee (or poo) their pants under any circumstances (except after a drunken night maybe) and joking aside, you should get it sorted. (Trust me I'm a professional)

Greenkit · 22/10/2013 02:43

I have no idea what TDEE means so will watch intently

Anyway, I had my weetabix for breakfast 09:30
Pork chop, veg, small amount of potatoes and some gravy for tea 16.30
Then weetabix for breakfast 07.00

Supposed to be a fast day, was it any good??

Have just drank water and two cups of tea

CrystalDeCanter · 22/10/2013 05:07

Hello all, this is such a fast moving thread!

I'm doing my 2nd fast day today. I had to have a bowl of museli this morning as was ravenous but it's 2.30 now and I'm not really hungry yet. I also get freezing on a fast day so remembered to wear a big jumper today and I'm about to go and make a cuppa to warm me up a bit.

I also had REALLY vivid dreams last night, unfortunately they were about getting a brilliant new job with LOADS of money, sadly not true.

CrystalDeCanter · 22/10/2013 05:11

Greenkit all acronyms are explained at the top of this thread . .

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.

Greenkit · 22/10/2013 05:15

Thank you CrystalDeCanter

Funny I was the same, had my breakfast then did feel hungry at all until I started cooking tea at 4, could have probably gone longer.

Im starving now though, only another 2 hours and I can eat

MelanieCheeks · 22/10/2013 07:09

Greenkit, when you ask "was it any good" - well, how was it for you? Did you count up the calories and were they under 500? Did you feel OK on it?

For me, weetabix wouldnt keep me very satisfied, and I can live without potaotes, as they quickly add up calories. But if you have to have them, make sure you know how many/ what weight they were so you can monitor the calories correctly.

BigChocFrenzy · 22/10/2013 07:10

angie the TDEE calculators have options for amount of exercise, e.g. sedentary, or 5-6 weekly. Just set it to the amount ypu do, then re-calculate your TDEE. The more exercise you do, the higher your TDEE.

On FDs, stick to 500 or less; on NFDs aim for around your newly calculated TDEE. I.e. do not allow any extra cals for exercise, because these are already in your new TDEE.

rubbishfamily333 · 22/10/2013 07:28

Now I've gone in about 4 different tdee calculators and they are all different Hmm well two are the same but the others are all different

rubbishfamily333 · 22/10/2013 07:28

Now I've gone in about 4 different tdee calculators and they are all different Hmm well two are the same but the others are all different

cuckoo13 · 22/10/2013 07:36

Morning! So came in under 500 yesterday. Was another easy one. Drinks only til 9 pm then a cauli cheese of sorts plus salad. Just waiting for the dreaded pre Aunty Flo week to begin - surely that will be my undoing.

AngieM Duly noted thank you. I will give it couple of days and see. Otherwise will talk to GP.

Beebs1987 Yes! Lots of us get cold on a fd. Ref your eating, I would really try to stock up on some quick to prepare, healthy fd foods. Have a mooch, maybe online on your usual supermarket website when baby feeding/sleeping. Look for a couple of different options to get you started then stock up.
If you avoid anything with carbs brd/pasta/rice/pots etc and also anything sugary, this will help with tiredness as you won't the carb slump/sugar crash after.
Every one is diff with rates of loss, but you could certainly put a good dent in it, if not a stone, by Christmas. You will prob look like you've lost that much even if scales don't match. I am shrinking faster than numbers decreasing for sure.
Be strict on fd, modest rest of time and should see big changes. I've lost 9lb in 5wks. It's possible.
Good Luck!

Good luck to all fd'ers today!

eatriskier · 22/10/2013 07:39

angie You could tackle the exercise thing several ways. You could adjust your TDEE upwards to account for your gym and try eating to that, see how your weight loss goes then. If you lose then fine, stay there. If not you could try your TDEE at goal weight including exercise which will restrict you again (I never did this as I had so much to lose it would have been like following a calorie controlled diet and I was not interested in that). Or you could knock the increased TDEE down a level. Alternatively you could eat to sedentary TDEE in the week, then splurge over the weekend and use your banked exercise calories. Just remember these TDEEs and exercise levels are estimates, as well as how much calorie deficit you personally need to lose 1lb so don't be afraid to play with these things. The key is to find a method that works and makes this sustainable for you.

eatriskier · 22/10/2013 07:42

beebs yes I get freezing on fast days - its good, its shows the body is burning off fat apparently. Some people I've heard have special FD cardigans and the like to stay warm.

rubbish the TDEE calculator linked in the OP is the one generally recommended here. Try that TDEE out. Don't worry about adjusting till you lose about 5-10lbs or if you're not seeing any loss at all.

eatriskier · 22/10/2013 07:46

Morning all,

2 NFDs to come here. I hit 10st on the nose this morning Grin. Yesterday's FD again proved that planning is the key, it was a far more successful day as I knew what I was having and looked forward to it rather than dithering over all the things I could have. Came in at 404 calories too.

Wine night tonight. Both DCs have woken up early and are in whining moods so I feel I will require it very much later. I suppose I should stop hiding and ignoring them now Confused

Good luck to today's fasters.

MelanieCheeks · 22/10/2013 07:59

TDEE is an estimate. Think about what it stands for - your total daily energy expenditure. There's no way that you're expending exactly the same energy every day. So dont worry if it should be 1756 or 1801 - stay in and around that zone, have a target range rather than One True Number.

BetsyBell · 22/10/2013 08:01

Morning all. NFD here - I think I should start planning those as well as I do FDs, gets very chaotic around the 4 to 5pm mark. Sometimes mornings too if I'm at home.

Anyway, have exercise gear on so will choose a different dvd today after school drop off - I always fail with the Jillian-esque do-a-thing-for-a-set-number-of-days due to interest waning around the 5th session. So plan is to mix it up.

Gym bunnies and body builders - question for you all: my above boob chest area is all ribby and bony, what exercises are good for getting a bit of muscle coverage there?

(That's not a stealth 'ooh I'm so skinny' boast - I think it looks highly unattractive and quite out of place with my big thighs and flabby bits elsewhere)

OP posts:
alfiemama · 22/10/2013 08:19

Bugger huge fail for me yesterday Blush
I had an apple all day (felt surprisingly good but cold) then soup and a roll. But then hubby declared he had bought wine and nibbles. So ended up coming in at 900 calories Blush
Now do I fast again today to level out?

Not2bObvious · 22/10/2013 08:25

I'm seriously hacked off this morning, last Thursday I was 11.3, Friday after disastrous Thursday I was 11.4.4(pizza &wine related) Normally if my fast had gone well, I'd have expected to be 11.2 - hey ho, such is life. But wtf!? This morning post fast, post poo(apologies tmi) I'm 11.7.4??
Fuming. Tell me it's a blip, I only went 1000 over on my weekly cals! Sick and annoyed. On an nfd, going to stick to my original plan, well behaved nfd and 16:8 tomorrow, followed by FD in Thursday but that's shocking annoying me. Rant overBlush

BetsyBell · 22/10/2013 08:25

alfiemama No, have a non fast day today and try and do better on your next fast day. 900 calories is still a big deficit compared to a normal eating day :)

Next time, make sure DH knows it's a fast day and NOT to bring home tempting things!

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