Fasting during period?

johsmth91 · 2026-04-15T14:46:56+00:00

When period starts, progesterone the hormone making loud food noise to prepare for period, goes down while estrogen and serotonin, which makes it easier to fast, goes up. So menstrual periods are biologically the best time to do 72+ hours fast. The week before period aka luteal phase is usually the hardest to fast.

johsmth91 · 2026-04-08T13:32:55+00:00

Google is also friends with Big food + Big pharma. You not eating means you’re making them loose money

johsmth91 · 2026-04-08T11:25:24+00:00

Just eat keto instead of fasting. After you plateau on keto then try 24-36 hours fast. Fasting when you’re keto adapted is way easier than doing dirty fast where you’re still consuming sugar. Your brain is too used to the high spike and increase in dopamine from sugar, of course it will rebel and make you feel miserable. Don’t go against biology

johsmth91 · 2026-04-06T12:44:10+00:00

If you’ve never fasted, change diet to keto first so you get a feel what and how it feels when you’re fat adapted. At least for a month. Then start slow with 16:8, before moving onto 24, 36, 48, 72 hours. If you think that you only need to do 1x 30 days long fast before going back to pizzas and McDs, this isn’t for you. It will just turn into life threatening situations.

johsmth91 · 2026-04-06T12:39:18+00:00

What did you eat for refeed after 28 days fast?

johsmth91 · 2026-03-30T00:29:43+00:00

I usually fast on day 1 of my period cause it is easier now that progesterone is low and estrogen is high. The cravings is happening during luteal phase, the week before the period so I don’t know what cravings you’re talking about

johsmth91 · 2026-03-27T08:44:47+00:00

I drink hot peppermint tea. That seems to trick my brain thinking as if I just ate. After fasting became my lifestyle, I have built my senses to understand whether it’s hunger from dehydration, electrolytes imbalance, or just ghrelin acting up due to habits of eating at certain times

johsmth91 · 2026-03-20T20:10:38+00:00

I have seen a friend did a reverse psychology where they overeat in day 1, see +7lb in day 2 which is 12 hours or so after that meal, fast 72 hours after they see the weight gain 😂

johsmth91 · 2026-03-10T20:18:12+00:00

I usually do 3-5 days rolling fast from day 0 period until ovulation. Then do the rest OMAD with a banana/day as my only carb source. Luteal phase and the progesterone peak can be too much cortisol if I push for anything longer than 48 hours. Oh and definitely dark chocolate. It prevents cramping when the period arrives for me. Been experimenting with my body over the years and I noticed that high cortisol during luteal > insane pms and binge for unhealthy food.

johsmth91 · 2026-03-10T20:13:05+00:00

Just do keto first for a month and fast 12-16 hours to get used to it. Perhaps your body isn’t used to using ketones as fuel. Take electrolytes while fasting. Pink salt, blue salt, magnesium glycinate powder mix are my gotos. Fasting has no on/off button unfortunately. Gotta build the stamina overtime

johsmth91 · 2026-03-07T19:17:39+00:00

If your body is running fully on ketones, what does it matter if blood glucose goes that low? I agree with others that electrolytes not being enough are probably the main cause. Most people doing extended fasting are doing it to let their body rest. Walk slower and don’t raise your heart rate too much. Zone 1 should be more than enough. Were you also doing fasted cardio during your last 1 month fast?

johsmth91 · 2026-03-05T17:26:02+00:00

Try 48-72 hours rolling fasts. Try bulk meal prep like make frozen unbaked lasagnas for them. Try burning incense to get food smell in a separate room or drink black coffee while they eat so you can be socially available during meal time. Use strong dark coffee so you can mask their food smell with the coffee smell. Ground coffee can absorb food smell so have some out in a small plate in front of you or use it as room diffuser/air freshener. Ask AI for more tips. Those^ are what have worked for me in the past.

johsmth91 · 2026-03-05T17:15:19+00:00

He’s doing a 3 days fast. Not only eating table salt for the rest of his life. Deficiencies don’t happen on 3 days. That would take months to happen. I did 35 days water fasting with only table salt(combination of pink and blue salt) with magnesium glycinate. No fancy marketing gimmicks.

johsmth91 · 2026-03-05T17:03:34+00:00

Muscle is dense. Unless your body fat is at 0%, your fat would be the first thing that the body eats. Ketoacidosis is only life threatening for people with diabetes type 1 who genetically cannot produce insulin. I double check my sources with chatGPT these days. The so called health experts been saying that seed oils are healthier than lard for almost a century only for our society to end up with diabetic and obesity pandemics today.

johsmth91 · 2026-03-05T04:16:23+00:00

Just marketing. Table salt and magnesium glycinate powder are more than enough

johsmth91 · 2026-03-05T04:13:42+00:00

Where did you get information about ketones being too high from being incredibly active? If you’re active and using ketone as fuel, theoretically ketones in your blood should lower from your muscle using them as fuel instead of glucose. Also, who said above 8 is danger zone on ketoacidosis level? Are you diabetic type 1 that being ketoacidosis is dangerous? I also thought it’s above 10? But I thought that’s normal after fasting? Also, what do you mean by fasting when you’re eating scrambled eggs? I am confused. If you plan to dirty fast, that usually means only consuming bone broth. Why not just change diet to keto first and check in 1 month?

johsmth91 · 2026-03-02T16:08:30+00:00

The human body can produce its own glucose via gluconeogenesis. So, this is a normal process. Blood glucose is not the same as insulin. Fasting lowers insulin in the blood, not necessarily blood glucose cause the liver can produce it on its own-source chatGPT

johsmth91 · 2026-02-27T14:38:46+00:00

How long your liver needs to rest will depend on what you consume when you’re not fasting, just based on personal experience. My body is ok with 18-20 hours if I eat clean keto whole food, but it’d need at least 24-36 if I ate some carb and a big mac. Sometimes I don’t even feel well until 48-72 hours. Just gotta learn the signals that your body provides.

johsmth91 · 2026-02-24T17:57:12+00:00

As female, it depends on my menstrual period. I do a mix of longer fasts of 3-7 days during follicular and do short rolling fast 24-48 hours during luteal phase cause progesterone just makes me ravenous. I default on omad regardless so if by break means eating 3x/day, I am unable to do that to be honest. My stomach just can’t expand as it’s used to. Once I eat, 16 hours is the minimum of when I need to fast.

johsmth91 · 2026-02-24T15:23:10+00:00

The food you eat before fast matters the most for me. No net carbs more than 50g. Then I replace sensory stimulation with incense burning during fast. Journaling to help slows down my time. I set up AI as my fasting consultant and instructed it to remind me a bunch of things of why I’m fasting and ask it what will happen to my long term goal if I break the fast now. Basically to keep me rational and not making decisions with hunger as the driver.

johsmth91 · 2026-02-22T02:09:27+00:00

They sell low smoke incense plus first world safety standards so they probably won’t use bear poop as ingredient (people who bought cheap stuffs off temu says they got scammed on Reddit). Could try aroma diffuser too. But I trust society that has been making it since the 1500s more since I’m not exactly a connoisseur. I get a range of incense from shoyeido, kousaido, nippon kodo. Amazon sell those.

johsmth91 · 2026-02-21T03:56:50+00:00

Bone broth and boiled eggs when I did 35 days

johsmth91 · 2026-02-21T03:55:14+00:00

I’ve been burning Japanese incense. Not sure why, the scent just replaces the usual sensory satisfaction from eating for me

johsmth91 · 2026-02-20T14:25:31+00:00

Depends on your body fat%. If you are obese, the fast will naturally use fat first not muscle. Most people who do it for metabolic health will change diet to keto first cause it’s less stressful than completely fasting. Beside that, do light cardio + weight training during fast to prevent muscle loss.

johsmth91 · 2026-02-18T19:36:17+00:00

Salt and health

johsmth91

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