Benefits of Intermittent Fasting and The 4 4 12 Fasting Schedule (2024)

Benefits of Intermittent Fasting and The 4 4 12 Fasting Schedule (1)

If it seems like everyone from your favorite celebrity to your next-door neighbor is doing intermittent fasting, you’re not wrong. And while it’s not just another one of those fad diets, it has been getting a lot of extra attention the last few years.

What is intermittent fasting?

Intermittent fasting is an eating pattern that cycles between periods of fasting and eating, with the fasting period usually lasting at least 12 hours. The benefits of intermittent fasting go far beyond weight loss, including:

  • Improved metabolism

  • Lower blood sugar levels

  • Boosted energy levels

  • Improved sleep quality

  • Brain health support

  • Improved insulin sensitivity

It’s popular because it works. When you go longer periods without eating, it gives your body a much-needed break from digesting food, which allows it to focus on other important processes that can support your overall health.

Breaking down the science of intermittent fasting

When you eat food, your body breaks it down into nutrients it can use for energy. When you don’t eat for longer periods of time, such as overnight, your body uses up all the sugar it has stored in the liver and begins to rely primarily on fat for energy instead.

At this point, the body produces molecules called ketones for energy, which directly fuel brain cells and may have anti-inflammatory effects in the body. In addition, a prolonged fast (at least 12 hours) naturally lowers your insulin levels, and your body will find other ways to be productive during its "down time," like breaking down damaged cells and recycling them for energy.

Additionally, intermittent fasting can also help regulate hormones that affect your metabolism, appetite, and energy levels.

Something as simple as waiting a little longer to eat breakfast or eating dinner earlier and skipping the midnight snack can do you a surprising amount of good, helping your body work more efficiently and helping you feel better overall.

Popular intermittent fasting schedules

Another great thing about intermittent fasting is that there’s more than one way to do it. Below are some of the most popular schedules.

16:8 intermittent fasting

This is the intermittent fasting schedule you’ll hear about most. It involves fasting for 16 hours and consuming all your meals in the remaining eight hours of the day.

For example, if you eat your first meal at noon, your last meal would be around 8 p.m., after which you would fast until noon the next day. Some people choose to eat two or three meals during their eating window, while others prefer to just have one or two larger meals.

If you’re new to intermittent fasting, you could also try the 14:10 schedule (fast for 14 hours, eat all your meals during a 10-hour window) to get you going. Most people find this method easier to adopt, especially if they haven’t tried intermittent fasting before.

4-4-12 intermittent fasting

The 4-4-12 method has a shorter fasting window—12 hours—but eliminates snacking between meals. The goal here is to fast for at least four hours between breakfast and lunch, four hours between lunch and dinner, and at least 12 hours between dinner and breakfast the next day.

So your day might look something like this:

  • 9 a.m.: Breakfast

  • 1 p.m.: Lunch

  • 6 p.m.: Dinner

This approach fits most lifestyles, as long as you can get by without snacking between meals and after dinner.

There are other intermittent fasting schedules, such as fasting every other day or limiting calories a few days a week, but 4-4-12 and 16:8 have the strongest research supporting them and are likely to garner the most benefits.

Which is the best intermittent fasting schedule?

The best intermittent fasting schedule is the one that works for you. The longer you do it, the more benefits you’ll see, so try it for a few months to give your body a chance to adjust. There’s nothing wrong with trying out different methods to help you find the one that works best with your lifestyle, either.

Before making major changes to your diet, be sure to consult with your doctor. They can help you find the best intermittent fasting schedule that aligns with your current health and future goals. You can also check out these blog posts for more intermittent fasting tips:

Benefits of Intermittent Fasting and The 4 4 12 Fasting Schedule (2024)

FAQs

Benefits of Intermittent Fasting and The 4 4 12 Fasting Schedule? ›

For example, one of the "sub-method" is the 4-4-12 schedule, in which the interval between their breakfast and lunch must be at least four hours, while dinner comes at least four hours after lunch and 12 hours ahead of breakfast the next day.

What is the 4 4 12 schedule for intermittent fasting? ›

For example, one of the "sub-method" is the 4-4-12 schedule, in which the interval between their breakfast and lunch must be at least four hours, while dinner comes at least four hours after lunch and 12 hours ahead of breakfast the next day.

What is the most beneficial intermittent fasting schedule? ›

Depending on your lifestyle and when you can manage to stop eating, the best hours for intermittent fasting include the 16/8 or 14/10 fasting periods. Intermittent fasting is hailed by many as the new mantra of weight loss, disease prevention, and reversal of aging.

How much weight can you lose in a month with intermittent fasting? ›

If you consistently stay active while following intermittent fasting, you can lose as much as 6-8 pounds per month. This estimation is shockingly high when you consider that all you have to do is not eat for select hours throughout the day.

Can I eat anything during an intermittent fasting eating window? ›

Types of intermittent fasting

With 16/8 time-restricted eating, you can eat what you choose during an 8-hour window and fast for the other 16 hours. For example, you could eat between 9 a.m. and 5 p.m. and then fast from 5 p.m. until 9 a.m. the next day.

What is the best intermittent fasting window to lose belly fat? ›

A 2023 review of research found that the 16/8 method and 16/8 combined with restricting calories were effective strategies for weight control in adults with overweight or obesity. An eating window starting before noon led to greater weight loss than one that began after noon.

Does coffee break intermittent fasting? ›

You can drink moderate amounts of black coffee during fasting periods, as it contains very few calories and is unlikely to break your fast. In fact, coffee may enhance the benefits of intermittent fasting, which include reduced inflammation and improved brain function.

Which intermittent fasting burns the most fat? ›

According to some researchers, fasting for 10–16 hours can cause the body to turn its fat stores into energy, which releases ketones into the bloodstream. This should encourage weight loss. This type of intermittent fasting plan may be a good option for beginners.

What is the best intermittent fasting pattern for weight loss? ›

The 5:2 diet is based on a principle known as intermittent fasting. This is where you eat normally at certain times and then fast during other times. There are different versions, but the 5:2 diet involves eating a normal, healthy diet for five days every week and 'fasting' on the remaining two days.

How can I maximize my intermittent fasting benefits? ›

It's difficult for some people to stick with intermittent fasting, but these tips may help you maximize your results. Focus on fresh, whole foods—including filling fiber, healthy fats, and protein—instead of processed foods. Make your fasting days your rest days from exercise to avoid feeling fatigued.

How long does it take to lose 10 lbs intermittent fasting? ›

Weinandy says that results are usually apparent around the 10-week mark, adding that she sees an average weight loss of seven to 10 pounds over that period through any of the three approaches to intermittent fasting mentioned previously. It might take longer than that since everyone's metabolism works differently.

How fast can I lose 30 pounds with intermittent fasting? ›

How much, though, depends on what kind of intermittent fasting schedule you're following (more on those schedules, below). People who do some form of full-day fasts usually lose about 10 to 30 pounds over a three-to-six-month period, says Varady.

Does intermittent fasting work without exercise? ›

Put simply, when people practice intermittent fasting without exercising, they are losing weight, but much of it often comes from the muscle in the lean mass. If they are exercising, then that shifts from a loss of muscle mass to a loss fat mass, so that's a large benefit.

What foods won't break a fast? ›

Foods you can eat while fasting
  • Water. Plain or carbonated water contains no calories and will keep you hydrated during a fast.
  • Coffee and tea. These should mostly be consumed without added sugar, milk, or cream. ...
  • Diluted apple cider vinegar. ...
  • Healthy fats. ...
  • Bone broth.

How long should I fast to lose belly fat? ›

Best Intermittent Fasting Method For Visceral Belly Fat

14/10 Method: Fast for 14 hours and have a 10-hour eating window daily. That means you restrict your food intake to a specific 10-hour period while abstaining from caloric consumption for the remaining 14 hours.

Can I eat junk food while intermittent fasting? ›

Many people randomly eat things during the eating window. The half knowledge that fasting period is enough to lose weight prompts them to consume unhealthy processed foods. Eating junk foods during intermittent fasting negates the benefits of intermittent fasting and enhances the growth of weight.

What is the sequence of intermittent fasting? ›

While practicing intermittent fasting, your body moves through several phases of the fed-fast cycle, depending on the amount of time that you fast. The four phases include the fed state, early fasting state, fasting state, and long-term fasting state (starvation state).

What is the alternate day schedule for intermittent fasting? ›

Alternate-day fasting (ADF) is an intermittent fasting approach. The basic idea is that you fast on one day and then eat what you want the next day. This way you only need to restrict what you eat half of the time. On fasting days, you're allowed to drink as many calorie-free beverages as you like.

How do I make an intermittent fasting schedule? ›

The practice of 16/8 intermittent fasting involves limiting your intake of foods and calorie-containing beverages to a set window of 8 hours per day. You abstain from food for the remaining 16 hours, though you're still allowed to drink water and other no-calorie beverages, like plain coffee or tea.

Does the intermittent fasting window have to be the same time everyday? ›

You can select any 16-hour and 8-hour block of time that works best for your schedule. But it's important to keep your eating window at the same every day. Other intermittent fasting schedules include 18:6 (when you fast for 18 hours and eat for 6 hours) or alternating days.

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