5 Day Fast vs Intermittent Fasting
5 Day Fast vs Intermittent Fasting
5 Day Fast
5 Day Fast
5 Day Fast vs Intermittent Fasting: a comprehensive comparison
Both 5 Day Fast and intermittent fasting (IF) are about fasting, but the approach is different. 5 Day Fast is a short, structured period of five days. Intermittent fasting is a daily habit where you restrict your eating windows, for example not eating for 14 hours and eating for 10 (14:10).
It doesn't have to be either-or. On this page you can read how the two differ and how they complement each other.
5 Day Fast vs Intermittent Fasting: a comprehensive comparison
Both 5 Day Fast and intermittent fasting (IF) are about fasting, but the approach is different. 5 Day Fast is a short, structured period of five days. Intermittent fasting is a daily habit where you restrict your eating windows, for example not eating for 14 hours and eating for 10 (14:10).
It doesn't have to be either-or. On this page you can read how the two differ and how they complement each other.
Comparison in detail
Why this comparison?
Do you have to choose between 5 Day Fast and intermittent fasting? Not necessarily. The two are set up differently and can easily coexist: 5 Day Fast as a short five-day period, and intermittent fasting as a daily habit.
How 5 Day Fast works
5 Day Fast is based on the principle of fasting mimicking. For five days you eat fewer calories according to a set menu, so you mimic fasting while you keep eating. After a few days your body switches to fat as its main fuel (ketosis).
With intermittent fasting, you mostly extend the time in a day when you don't eat, for example 16 hours. That's a different rhythm: shorter, but every day.
What makes 5 Day Fast different?
• Everything sorted: menu, shopping list, recipes, supplements and an exercise schedule. You just follow the plan day by day.
• Five days, then done: a manageable period that you can schedule, for instance during a quiet week.
• Supplements included: the supplements for all five days are in the pack, tailored to the menu.
• Ketosis within a few days: because of the lower energy intake, your body switches to fat as fuel. With intermittent fasting, this period usually doesn't last as long.
What makes intermittent fasting strong?
• Flexible: you choose your own schedule, for example 14:10, 16:8 or 12:12.
• Easy to keep up: it fits as a regular habit into your daily life.
• No costs: you don't need a package or supplements.
What does the science say?
A lot of research is being done into both forms of fasting. 5 Day Fast builds on the research into fasting mimicking by Prof. Valter Longo; you can read more about that on our Scientific basis page. There's also plenty of research being done into intermittent fasting, including on weight and blood sugar.
Which approach suits you?
Choose 5 Day Fast if you:
• want a short, clear period where everything is sorted for you;
• you want to break your eating habits once and for all;
• you want everything in one package: menu, supplements and exercise plan.
Choose intermittent fasting if you:
• you're looking for a habit for the long term;
• you want flexibility in when you eat.
Or combine them: 5 Day Fast to start with, intermittent fasting as a habit after that.
Frequently asked questions
Can you combine 5 Day Fast and intermittent fasting?
Yes. Lots of participants start with 5 Day Fast and then carry on with intermittent fasting as a daily habit.
Do you lose weight faster with 5 Day Fast or with intermittent fasting?
How much weight you lose varies per person. During five days with fewer calories, you often lose mostly water weight in a short time; lasting results require healthy habits afterwards. You can read more about this in our frequently asked questions.
How often can you do the 5 Day Fast?
You can repeat 5 Day Fast periodically.
In short
5 Day Fast and intermittent fasting are different, but they complement each other well. You can use 5 Day Fast as an easy-to-follow five-day start, and intermittent fasting as a habit for afterwards.
If you are doubting whether fasting is right for you, for example due to pregnancy, medication use or a medical condition, then please consult your doctor first.
Find the answers
you're looking for
Why this comparison?
Do you have to choose between 5 Day Fast and intermittent fasting? Not necessarily. The two are set up differently and can easily coexist: 5 Day Fast as a short five-day period, and intermittent fasting as a daily habit.
How 5 Day Fast works
5 Day Fast is based on the principle of fasting mimicking. For five days you eat fewer calories according to a set menu, so you mimic fasting while you keep eating. After a few days your body switches to fat as its main fuel (ketosis).
With intermittent fasting, you mostly extend the time in a day when you don't eat, for example 16 hours. That's a different rhythm: shorter, but every day.
What makes 5 Day Fast different?
• Everything sorted: menu, shopping list, recipes, supplements and an exercise schedule. You just follow the plan day by day.
• Five days, then done: a manageable period that you can schedule, for instance during a quiet week.
• Supplements included: the supplements for all five days are in the pack, tailored to the menu.
• Ketosis within a few days: because of the lower energy intake, your body switches to fat as fuel. With intermittent fasting, this period usually doesn't last as long.
What makes intermittent fasting strong?
• Flexible: you choose your own schedule, for example 14:10, 16:8 or 12:12.
• Easy to keep up: it fits as a regular habit into your daily life.
• No costs: you don't need a package or supplements.
What does the science say?
A lot of research is being done into both forms of fasting. 5 Day Fast builds on the research into fasting mimicking by Prof. Valter Longo; you can read more about that on our Scientific basis page. There's also plenty of research being done into intermittent fasting, including on weight and blood sugar.
Which approach suits you?
Choose 5 Day Fast if you:
• want a short, clear period where everything is sorted for you;
• you want to break your eating habits once and for all;
• you want everything in one package: menu, supplements and exercise plan.
Choose intermittent fasting if you:
• you're looking for a habit for the long term;
• you want flexibility in when you eat.
Or combine them: 5 Day Fast to start with, intermittent fasting as a habit after that.
Frequently asked questions
Can you combine 5 Day Fast and intermittent fasting?
Yes. Lots of participants start with 5 Day Fast and then carry on with intermittent fasting as a daily habit.
Do you lose weight faster with 5 Day Fast or with intermittent fasting?
How much weight you lose varies per person. During five days with fewer calories, you often lose mostly water weight in a short time; lasting results require healthy habits afterwards. You can read more about this in our frequently asked questions.
How often can you do the 5 Day Fast?
You can repeat 5 Day Fast periodically.
In short
5 Day Fast and intermittent fasting are different, but they complement each other well. You can use 5 Day Fast as an easy-to-follow five-day start, and intermittent fasting as a habit for afterwards.
If you are doubting whether fasting is right for you, for example due to pregnancy, medication use or a medical condition, then please consult your doctor first.
Do you want to get off to a flying start straight away?
Start your 5 Day Fast today
Complete 5 Day Fast box, including:
✔ All supplements for 5 days (Omega, Glycerol, Spirulina, ION* Gut Support, Magnesium, Multivitamine and NAC)
✔ A menu you've put together yourself for 5 days, incl shopping list, via email
✔ An exercise plan
