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How To Correctly Do Intermittent Fasting

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Three: Modify Your Fasting Diet

How to properly do intermittent fasting (Complete Guide)

Remember that theres no standard rule when it comes to fasting. Hence, you can always modifyyour fasting diet in any way that works for you.

Check out some of the most commonly practiced fasting patterns:

Intermittent Fasting:

This is a daily four, eight, or 12-hour feeding window.

Here are the following ways to implement intermittent fasting:
  • The 16/8 Fasting Method: It involves 16-hour daily fasting for men and 14 to 15 hours for women. Eating is restricted for eight to 10 hours wherein you can fit two or more meals.
  • The Fast Diet: Its also known as the 5:2 diet, wherein it involves eating 500 to 600 calories for two days out of the week and then eating normally the other five days.
  • Eat-Stop-Eat: This fasting involves fasting for 24 hours, a fitness expert.
  • One Meal Daily: This fasting involves eating only once a day.
  • Extended Fasting: This fasting method involves fasting for 24 hours or more.
  • Alternate Day Fasting: This involves eating every other day.
  • 5:2 Fast Diet: This involves eating normally for five days at 500 to 600 calories for two days.
  • Safety And Side Effects

    Hunger is the main side effect of intermittent fasting.

    You may also feel weak and your brain may not perform as well as youre used to.

    This may only be temporary, as it can take some time for your body to adapt to the new meal schedule.

    If you have a medical condition, you should consult with your doctor before trying intermittent fasting.

    This is particularly important if you:

    • Have diabetes.
    • Have a history of eating disorders.
    • Are a woman who is trying to conceive.
    • Are a woman with a history of amenorrhea.
    • Are pregnant or breastfeeding.

    All that being said, intermittent fasting has an outstanding safety profile. There is nothing dangerous about not eating for a while if youre healthy and well-nourished overall.


    The most common side effect of intermittent fasting is hunger. People with certain medical conditions should not fast without consulting with a doctor first.

    Here are answers to the most common questions about intermittent fasting.

    Consider The Intermittent Fasting Plan Right For You:

    Some of the popular regimens include:

    The 16:8 diet, or time-restricted feeding, where you fast for 16 hours a day, but are free to eat whatever you want in the other eight hours. Experts advise picking an eating window that lets you finish your meals fairly early, such as 10 a.m. to 6 p.m. or earlier, because your body is less efficient at putting sugar away as the day goes by.

    Alternate day fasting, which means limiting yourself to 500 calories one day, then eating whatever you want the next, and then repeating that process.

    The 5:2 plan, which means incorporating two non-consecutive fast days into your week, then eating normally during the other days.

    Here are four tips to keep your plan on track:

    Recommended Reading: What Can You Eat While Doing Intermittent Fasting

    Popular Ways To Do Intermittent Fasting

    Intermittent fasting has recently become a health trend. Devotees claim it can cause weight loss, improve metabolic health, and maybe even extend life span.

    Every method can be effective, but figuring out which one works best depends on the individual.

    Several methods of this eating pattern exist. But before embarking on an intermittent fast or deciding how often to fast, you should speak with a healthcare professional.

    Here are 6 popular ways to do intermittent fasting.

    Intermittent Fasting For Women What To Do & How To Succeed

    The Intermittent Fasting Trend: What Is the Best Way to Do It?

    Odds are if youre fitness and health savvy lady, you have heard of intermittent fasting for women and its advantages for fat reduction and general well-being.

    But did you realize that, if you are a girl, fasting can direct to hormonal imbalance and may result in fertility problems if not done correctly? Here, we will talk about the most effective ways for girls to enjoy the favorable areas of intermittent fasting without even placing their health in danger.

    Some girls who attempt intermittent fasting for women encounter missed Intervals, metabolic disturbances, and also early-onset menopause. Sure it may do the job for some girls. But here is why intermittent fasting may be awful counterproductive to the objectives.

    Why Fasting?

    An intermittent quickly is a short fast at which for 1216 hours or longer, you do not consume anything except water . And while this might seem incredibly difficult to reach, you may already be fasting without even understanding it should you eat supper in, say, 7 pm and break your fast in the afternoon between 710. Also, if you merely need to have plain water and black tea or coffee.

    For many whove been educated to eat half a day to maintain up our metabolism, it may be a problematic and apparently contradictory effort to go 12-plus hours. But science backs this historical practice.

    Medical studies show that intermittent fasting:

    • Increases energy
    • Makes us insulin resistant
    • May increase immunity, reduce diabetes risk, and enhance heart.

    Don’t Miss: How Fast Does Intermittent Fasting Work

    Mistake #: Youre Eating Too Many Calories

    “Does anyone else eat like crazy right when the fast is over and is it normal to have a huge appetite during the feeding period? It is hard for me to get full after a 20 hour fast and I just eat the whole 4 hours. LOL.”

    Id venture to guess that this person is eating more calories than whats needed in that 4-hour window. So instead of laughing your way through a marathon all-you-can-eat session, plan for how youll break your fast. Stock up on high-protein foods and/or high-fiber foods . Theyll not only fill you up, but will keep you feeling full.

    “If I do a 20:4 fast then I should consume 1500-2000 calories within four hours? Am I understanding this correctly?”

    Technically, yes. But depending on a persons body size, eating 2,000 calories in a 4-hour window might not yield any weight loss. I dont know this persons size, though. Now, most people lose weight on 1,500 calories, but one of the pros of IF is that its hard to eat a ton of calories in a short window of time. For some, following IF is an easier way to cut calories and lose weight than simply following a traditional calorie-restricted diet. So if you cant hit the 1,500- or 2,000-calorie mark in 4 hours every day, its OK. If falling below 1,200 calories a day becomes a regular habit, though, reconsider your diet plan. If youre not sure how many calories youre consuming, track them in a free app like MyFitnessPal.

    Struggling To Cook Healthy We’ll Help You Prep

    Ive been a dietitian for nearly 15 years, so Ive read my share of research on IF, Ive written about it a handful of times, and Ive even tried intermittent fasting out for myself. Heres my take: it works really well for some people regardless of what type of IF they follow, but one common denominator is that plenty of folks out there are doing it wrong.

    There happens to be a lot of misinformation floating around the internet , so I culled a list of some of the top comments and questions on Reddits Intermittent Fasting thread and answered them the best I could. Here are some common questions I found about IF, plus some common mistakes to avoid when trying it.

    Recommended Reading: What Foods Can You Eat While Intermittent Fasting

    Fast For 12 Hours A Day

    The rules for this diet are simple. A person needs to decide on and adhere to a 12-hour fasting window every day.

    According to some researchers, fasting for 1016 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. This is because the fasting window is relatively small, much of the fasting occurs during sleep, and the person can consume the same number of calories each day.

    The easiest way to do the 12-hour fast is to include the period of sleep in the fasting window.

    For example, a person could choose to fast between 7 p.m. and 7 a.m. They would need to finish their dinner before 7 p.m. and wait until 7 a.m. to eat breakfast but would be asleep for much of the time in between.

    A Sample Day Of A : 4 Fast

    How To Do Intermittent Fasting Correctly To Lose Weight?

    7:00 am Wake and drink 500 mL of water with lemon

    9:00 am Eat 1 boiled egg white, a handful of berries or 1 cup of green tea

    1:00 pm Drink grapefruit juice, 1 cup of yoghurt or ½ cup of raw vegetables

    8:00 pm Eat dinner containing protein, healthy fats and complex carbs

    9:00 pm Drink 1 cup of warm milk with turmeric

    10:00 pm Eat desserts such as dark chocolate or fruit custard

    Read Also: Do You Have To Be Fasting For An Std Test

    Does Intermittent Fasting Boost Your Metabolism

    Intermittent fasting is an eating pattern that involves periods of food restriction, called fasting, followed by a period of regular eating.

    This pattern of eating could help you lose weight, reduce your risk of disease, and increase your lifespan .

    Some experts even claim that its beneficial effects on metabolism make it a healthier way to lose weight than standard calorie restriction (

    4 ).

    Studies have shown that when it comes to weight loss, intermittent fasting can be just as effective as traditional calorie restriction, if not more so .

    In fact, a 2014 review found that intermittent fasting could help people lose an impressive 38% of their body weight in 324 weeks .

    A 2016 review concluded that in people who have obesity or overweight, intermittent fasting may be a better approach to weight loss than very low calorie diets (

    13 ).

    There are a few different ways to try intermittent fasting. Some people follow the 5:2 diet, which involves fasting for 2 days per week. Others practice alternate-day fasting or the 16/8 method.

    If you are interested in trying intermittent fasting, you can read more about it in this detailed guide for beginners.


    Intermittent fasting is a powerful weight loss tool. It can also improve your metabolism and metabolic health.

    It May Aid Weight Loss

    Various methods of intermittent fasting, including 20-hour fasting cycles, have been linked to weight loss.

    One study, which closely mimicked the Warrior Diet , found that people who consumed meals over four hours in the evening experienced more weight loss than those who consumed the same amount of calories in meals throughout the day.

    Whats more, those who ate one meal per day showed significantly reduced fat mass and greater muscle mass .

    A recent review of six studies concluded that various types of intermittent fasting, ranging from 3 to 12 months, were more effective at promoting weight loss than no dietary intervention.

    However, the review found that there were no significant weight loss differences between dieters using intermittent fasting or continuous calorie restriction , meaning that calorie restriction without fasting was equally effective .

    Additionally, although reducing calorie intake is the most common outcome of the Warrior Diet, some people following this eating pattern could technically consume too many calories during the four-hour overeating period and experience weight gain.

    Don’t Miss: What Can I Eat During Fasting In Intermittent Fasting

    Can Help With Fat Loss

    If fat loss is one of your health goals, time-restricted fasting can be a simple way to help stay within your daily recommended calorie amount.

    ‘In terms of fat loss, intermittent fasting works the same way as any other diet it implements a calorie deficit,’ says Maximuscle trainer, Dan Lambert. ‘Intermittent fasting simply makes “eating less” easier as you have less time to do it.’

    However, and this is important to note, it’s not necessarily the fasting for weight loss that’s helping you see results.

    ‘It’s unclear whether you would lose more fat using a fasting protocol, compared with more conventional eating patterns, where you’re eating the same amount of calories,’ says Lambert. ‘Intermittent fasting may simply allow you to sustain a calorie deficit with relative ease for a longer period of time.’

    Isnt It Important To Have Breakfast Every Morning

    Pin on How to do Intermittent Fasting

    Not necessarily. This appears to be an old misconception, based on speculation and statistics, and it does not hold up when its tested.57 Skipping your morning meal gives your body more time to burn fat for energy. Since hunger is lowest in the morning, it may be easiest to skip it and break your fast later in the day.58

    Learn more:

    Also Check: How Much Weight Can I Lose Fasting For 7 Days

    Intermittent Fasting Can Help Weight Loss

    IF makes intuitive sense. The food we eat is broken down by enzymes in our gut and eventually ends up as molecules in our bloodstream. Carbohydrates, particularly sugars and refined grains , are quickly broken down into sugar, which our cells use for energy. If our cells dont use it all, we store it in our fat cells as, well, fat. But sugar can only enter our cells with insulin, a hormone made in the pancreas. Insulin brings sugar into the fat cells and keeps it there.

    Between meals, as long as we dont snack, our insulin levels will go down and our fat cells can then release their stored sugar, to be used as energy. We lose weight if we let our insulin levels go down. The entire idea of IF is to allow the insulin levels to go down far enough and for long enough that we burn off our fat.

    When Not To Intermittent Fast

    As many benefits as intermittent fasting offers, its not for everyone.

    Certain individuals that should avoid intermittent fasting include:

    • People with diabetes: Fasting can increase the blood sugar spikes and drops that a person with diabetes experiences during the day. Fasting is not recommended for people with Type-I diabetes, while those with Type-II diabetes should be medically supervised if fasting.
    • If you are pregnant or breastfeeding: Pregnancy and nursing are hard work, and your body needs a certain amount of calories to function properly. You may also want to avoid intermittent fasting if youre trying to become pregnant.
    • If youre on certain medications: Avoid intermittent fasting if youre on medications that require you to eat when you take them.
    • You have certain diseases or disorders: If you have cancer, a weakened immune system, gastrointestinal issues, or other chronic or major illnesses, intermittent fasting may not be the right choice. Some of these disorders like cancer and gut issues may be able to be improved through intermittent fasting, but should again be done so under medical supervision.
    • If you have an eating disorder: Or a history of eating disorders, intermittent fasting can trigger these behaviors. Other behavioral changes like binge eating and obsessive thoughts around food may be signs that intermittent fasting isnt the right fit for you.

    Recommended Reading: What Do I Eat When Intermittent Fasting

    What The Studies Show

    Intermittent fasting has been shown, in many short-term research studies, that it can help you lose weight, improve your health and potentially protect you from developing certain diseases. And whats most appealing, is that it doesnt restrict you daily, like conversional dieting.

    Studies have also shown that intermittent fasting may help prevent or even reverse diabetes. This is because it helps to control and reduce insulin and glucose concentrations in your blood.

    Intermittent fasting may improve your sleep and gut health. It can also improve measures associated with cardiovascular disease and cancer, and possibly reduce inflammation.

    However, theres still not enough studies to show how safe intermittent fasting is if you do it for a long time. But in general, most research highlights that its safe in otherwise healthy adults.

    /8you’re Not Taking It Slow

    How To Do Intermittent Fasting Correctly

    When people switch to a particular diet, one common mistake they make is jumping right to it and not taking it slow and steady.

    With intermittent fasting, people do the same. Given that average human beings are used to eating after every few hours, leaping forward to a 24 hour fasting may not be the best solution. Rather one must start with a small fasting window and then gradually increase the frame.

    If you go all in on your first try, you may not remain consistent and may lose track over time.

    Recommended Reading: How Long Is Fasting Blood Sugar

    Should You Do Intermittent Fasting And The Keto Diet

    We have a crazy extensive guide on the Keto Diet in case youre not familiar with it, so here it is in a nutshell:

    This process is called ketosis, and there are two ways for a body to enter ketosis:

    • Eating in a way that induces ketosis .
    • FastingHey, thats what youre reading about right now!

    We actually have an amazing success story here on Nerd Fitness, Larry, who followed our strategies, went Keto and start intermittent fasting. He ended up losing weight, getting stronger, AND overcame the challenges of rheumatoid arthritis !

    Heres how the fasting portion of it works:

    As your body enters a fast period when there are no sources of glucose energy readily available, the liver begins the process of breaking down fat into ketones.

    Fasting itself can trigger ketosis.

    Fasting for a period of time before kicking off a Keto-friendly eating plan COULD speed your transition into the metabolic state of ketosis, and fasting intermittently while in ketosis could help you maintain that state.

    I personally love fasting for the simplicity: I skip breakfast every day and train in a fasted state. Its one less decision I have to make, its one less opportunity to make a bad food choice, and it helps me reach my goals.

    WHY KETO + IF WORKS = eating Keto can be really challenging. And every time you eat, its an opportunity to do it wrong and accidentally eat foods that knock you out of ketosis.

    Youre also tempted to overeat.

    Your value may vary!

    You need to decide what works for you.

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