A “rolling 24” pattern is a variation on the Eat Stop Eat approach: one or two 24-hour fasts per week, with the fasting days changing from week to week rather than being fixed. It is designed to avoid the main social downside of fixed-day fasting, which is always missing the same meals.
This page explains how the pattern works, how it compares with fixed-day fasting, how to plan the days, how to get through a 24-hour fast safely, and who should not try it. Note that there is little research on this specific pattern; most evidence on intermittent fasting comes from daily time-restricted eating, 5:2, and alternate-day fasting studies.
Table of Contents
What Rolling 24s Are
The basic structure is one or two 24-hour fasts per week, with the days rotating. Week 1 might be Monday and Thursday, week 2 Tuesday and Friday, week 3 Wednesday and Saturday. The number of fasts per week stays the same; the specific days do not.
A 24-hour fast usually runs from one meal to the same meal the next day, for example dinner on Monday to dinner on Tuesday. That means skipping breakfast and lunch on one day, not a whole day without food. Water, black coffee, and plain tea are generally allowed.
The advantage is that you do not always miss the same meals or events. If you always fast on Mondays and Thursdays, you always miss any lunches or dinners that fall on those days. Rolling the days around avoids this.
vs Eat Stop Eat
- Eat Stop Eat: 1-2 fasts per week, often on fixed days for routine
- Rolling 24: 1-2 fasts per week with days varying
- Both: similar weekly calorie reduction
- Rolling adds social flexibility but loses some of the ease of a fixed routine
There is no reason to expect a meaningful physiological difference between the two. The difference is practical: some people find a fixed routine easier, others prefer flexibility.
How to Roll the Days
Common ways to choose the days:
- Calendar-based: look at the week ahead, identify the easiest days, fast then
- Pattern-based: Mon/Thu one week, Tue/Fri next, Wed/Sat next, etc.
- Avoidance-based: identify days with social meals first, then schedule fasts on remaining days
- Day-of decision: decide in the morning whether today suits a fast; this is flexible but makes it easy to keep postponing
Keep at least one full day of normal eating between fasts. Back-to-back fasting days turn this into a much longer fast, which carries more risks and is a different protocol.
Practical Protocol
Standard implementation
- Two 24-hour fasts per week
- Eat at 7 PM, then fast until 7 PM the next day (or use any meal-to-meal anchor)
- Days vary based on your schedule
- Eat normally on non-fasting days; do not try to compensate before or after
If you are new to fasting, start with one 24-hour fast per week, and only after you are comfortable with shorter daily fasts such as 16:8.
Getting through the fasting day
- Drink water regularly; black coffee and plain tea are fine for most people
- Headaches and light-headedness are common; a pinch of salt in water can help some people (see electrolytes and fasting)
- Keep exercise light on fasting days, and schedule hard training on eating days
- Break the fast with a normal, balanced meal rather than a very large one (see how to break a fast)
- Stop the fast and eat if you feel faint, confused, shaky, or unwell
Weekly planning
- Sunday evening: identify 2 easy fasting days for the upcoming week
- Mark them on calendar
- Treat them as plans, but move them if something comes up; flexibility is the point
Who It Suits
- People with variable weekly schedules
- Frequent business travellers
- Shift workers with rotating schedules
- Anyone who finds fixed-day patterns socially problematic
- People who have done fixed-day 24-hour fasts and want more flexibility
For shift workers, fasting across irregular sleep can be harder; a daily eating window that moves with your shifts may be easier. See fasting and work.
Who Should Avoid It
24-hour fasts are more demanding than daily time-restricted eating. They are not suitable for:
- Anyone who is pregnant or breastfeeding
- Anyone under 18
- People who are underweight or have a current or past eating disorder
- People with type 1 diabetes, or type 2 diabetes treated with insulin or sulfonylureas, unless their care team agrees and adjusts medication
Talk to a healthcare provider first if you have any chronic health condition, take regular medication (especially for blood pressure or blood sugar), or are older and at risk of muscle loss. See our fasting safety guide.
Common Mistakes
- Postponing fasts indefinitely (“today isn’t a good day” becomes every day)
- Putting fasts back-to-back when other days fall through
- Compensating eating between fasts
- Doing one fast some weeks and three in others; this makes the pattern less predictable and three fasts in a week is a more demanding protocol
- Adding extra fasts before or after big meals or events to “make up” for them, which can encourage a restrict-and-overeat cycle
Frequently Asked Questions
Is this just Eat Stop Eat with variable days?
Essentially, yes. The fasts themselves are the same; only the scheduling differs. Some people prefer flexibility, others the routine of fixed days.
Can I do 3 fasts some weeks?
Three 24-hour fasts a week moves toward alternate-day fasting, which is more demanding. For rolling 24s, stick to one or two per week.
How do I know which days to fast?
Pick the easiest days each week - days without social meals, hard training, or work commitments around food. Plan a week in advance.
Will my body adapt better to fixed days?
There is no evidence that it makes a meaningful difference. The main difference is practical: fixed days can become a habit more easily, which some people find helpful.
Can I switch between fixed and rolling?
Yes. Use whichever suits your current situation: fixed days when your routine is stable, rolling days when it is not.
Do I need to break fast at the same time?
No. The clock time can vary from fast to fast. The 24-hour length is a guide rather than a rule; stopping earlier is fine if you need to.
The Bottom Line
Rolling 24-hour fasts are one or two weekly 24-hour fasts on days that change with your schedule. The fasts themselves are the same as in fixed-day patterns; the difference is flexibility for people with variable weeks. Plan a week ahead, keep at least one normal eating day between fasts, and do not let “rolling” turn into constant postponing. As with any 24-hour fast, it is not suitable for everyone, so check the safety points above and talk to a healthcare provider if you have a health condition or take medication.