The 5-1-1 rule structures keto-flexing: five days of strict keto (under 50g carbs), one optional 24-hour fast, and one flex day with over 150g carbs from healthy sources. The flex day preserves metabolic flexibility and supports hormone conversion, particularly useful before menstruation.
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There's something called the 5-1-1 rule that I talk about in Metabolic Freedom, and it's a way to use keto flexing. So essentially, it's 5 days out of the week you're doing keto, you're eating keto-friendly meals focused on protein.
And so that's 50 grams of carbs or less?
Yeah, total, exactly.
And you're basically getting that, I would assume, just from non-starchy vegetables?
Yes, that is exactly— that's it. So green leafy vegetables, non-starchy vegetables for 5 days, hitting your protein target, which is 1 gram of protein per pound of your ideal body weight, Then one day out of the week, and it depends on the woman here and how much stress, stress she has, but one day out of the week you might perform a 24-hour fast where you just go breakfast to breakfast or lunch to lunch or dinner to dinner. Again, it depends on how much stress that woman has. The final day, which is the second one in the 5:1:1, is a keto flex day where you do not fast. You actually take your total carbs above 150 grams coming from healthy carbohydrates still hitting your protein requirement, but you're lowering your fat that day. You don't want a high carb day and a high fat day. So that's one variation called the 5-1-1 rule of how to practice keto flexing.
And what does that do for someone?
So it helps you maintain metabolic flexibility. It reminds your body that one day that you're getting out of ketosis, it reminds your metabolism there's different fuel sources, there's carbohydrates and sugar, we haven't forgotten how to burn that. Let's burn that. It helps to make hormonal conversions. T4— thyroid inactive— T4 to T3. Insulin helps with that. It helps to build progesterone and estrogen for ladies who have a menstrual cycle, which of course the week before the period would be a good week to have more of those flex days.