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Fasting / 5:2 diet

Combining fasting with low carb 1

884 replies

StuntNun · 07/02/2021 14:21

This thread is for people who want to combine fasting with a low carbohydrate way of eating such as Low Carb Bootcamp, keto, paleo or primal.

Disclaimer – I am not a health professional – I am relying on my own reading and experience. If you have a relevant health condition then consult your doctor before introducing fasting. For example, people with diabetes or high blood pressure often require medication adjustments if they cut carbs or start fasting. In many conditions, medications must be taken with food which may dictate one or more regular meals per day. If you have had an eating disorder, or tend to be obsessive or controlling about food, then fasting may not be appropriate for you. I’m happy to chat about any of these issues but this thread is not a substitute for professional medical advice.

Why fast?

  1. To lose weight
  2. For the health benefits (e.g. reducing insulin resistance, triggering cellular repair, lowering inflammation, reducing blood pressure)
  3. All of the above!


Types of fasting
  1. Intermittent fasting (for example 16:8)
  2. Fasting mimicking diet (such as 5:2)
  3. Extended fasting (over 24 hours)


I will describe each of these over the next three posts. Most people start out with, or working towards, either 16:8 or 5:2. Before we get started, my top fasting tip is to make sure you have plenty of calorie-free drinks: water, black coffee or tea, green tea or herbal teas. You may need to drink more than usual because you aren’t getting any water from food during your fasting window.
OP posts:
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StuntNun · 29/10/2022 07:57

Good work @ZiggZagg!

OP posts:
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NotDonna · 29/10/2022 17:01

That’s amazing ziggzagg had you already decided you’d go 29hrs or did you start getting hungry.

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ZiggZagg · 01/11/2022 09:25

No i felt true hunger so broke the fast, the most I've done is 40 hours according to my life app!

I always feel great after about 20 hours, really light and lots of energy, which is soooo unusual for me Grin

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heliosfountain · 01/11/2022 20:34

Hello all, I'm mid clean fast so thought I'd say hello! I usually do low carb & OMAD but dont feel particularly hungry tonight so think I'll keep going until some point tomorrow - last ate around 8pm last night (Bootcamp cauliflower cheese then yoghurt), so hopefully 36-40 hours. I've had gallons of water and a black coffee.

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heliosfountain · 02/11/2022 12:43

heliosfountain · 01/11/2022 20:34

Hello all, I'm mid clean fast so thought I'd say hello! I usually do low carb & OMAD but dont feel particularly hungry tonight so think I'll keep going until some point tomorrow - last ate around 8pm last night (Bootcamp cauliflower cheese then yoghurt), so hopefully 36-40 hours. I've had gallons of water and a black coffee.

I'm now 40+ hours in (last ate 8pm Mon 31/10) and feel fine, not really hungry, so think I'll keep going for the moment.

I've had 3l water today so far and might have a black coffee now.

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heliosfountain · 03/11/2022 00:18

heliosfountain · 02/11/2022 12:43

I'm now 40+ hours in (last ate 8pm Mon 31/10) and feel fine, not really hungry, so think I'll keep going for the moment.

I've had 3l water today so far and might have a black coffee now.

I made it to 48 hours! The last 3 hours were HARD. I feel a bit odd and shakey now (approx. 3.5hrs after eating) - I'm not sure if it's fasting or general exhaustion (other life stresses) or lack of electrolytes (I do use Bulk powder, maybe I need more if I'm fasting). Hopefully I'll feel better after a sleep and a 2 mile walk in the morning!

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ZiggZagg · 03/11/2022 07:18

Well done @heliosfountain . I don't ever feel shaky after a fast. What did you break fast with?

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heliosfountain · 03/11/2022 09:33

I feel much better today after a sleep and walk. I think it was extreme tiredness. I broke with some poached chicken and Greek yoghurt.

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heliosfountain · 03/11/2022 09:39

Weight is interesting though (I weigh at 6am every morning):-

83.4kg Tues (10hrs into fast so normal morning)
81.7kg Weds (34hrs into fast)
82.1kg Thurs (fast broken, ate at 8pm previous evening)

So 1.3kg lost overall, I'll be interested to see if it sticks! Planning OMAD today and won't have a chance to cook until 8pmish.

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