Prolonged Fasting For 3
This involves going with no calories for 3-5 days. These types of fasts are usually done under medical supervision. All studies of prolonged fasting allow up to 500 calories during fasting days. These calories should come from low-protein, low-carb foods. This usually means vegetable juices and vegetable soup, averaging a total calorie intake of 200250 kcal and 2535 g of carbohydrates per day. Our CEO does quarterly 5-day modified fasts in which he eats 2 cups of mixed greens with olive oil and a handful of almonds for a total of 250 calories.
Do not attempt a multi-day fast with water only. All clinical trials of multi-day fasts involve at least minimal calorie and micronutrient intake.
Who Is Sprinly For
Sprinly can be a great option for those interested in enjoying a variety of fresh, flavorful, and nutritious meals each week.
It may be especially appealing for people who are short on time, as the meals are delivered fully prepared and ready to reheat.
Because all the meals are vegan and made with mostly organic ingredients, its a great choice for health-conscious consumers and those following a plant-based or gluten-free diet.
However, its more costly than many other meal delivery services on the market, meaning it may not be ideal for those on a tight budget.
Its also not suitable for people with certain dietary restrictions because it offers limited options for paleo, low carb, and ketogenic eating patterns.
You Keep Breaking Your Fast
If you are used to snacking in between meals, staying without food for an extended fasting period could be difficult and affect your intermittent fasting results.
Consistently breaking your fast before your fasting window is up could be responsible for your lack of progress with intermittent fasting.
Your fasting period might be too long and switching your eating schedule a bit might be helpful. Consider reducing your fasting period to about 10-12 hours and begin to increase it as time goes on.
Moving up slowly allows your body to get used to going extended periods without food, therefore, you are less likely to break your fast prematurely.
When you can tolerate going longer without food, you could move up to the 16:8 intermittent fast. Here, you will have eight hours for feeding.
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Can Be A Sustainable Lifestyle Change
Intermittent fasting might sound complicated and intimidating, but it can be simple at times. In fact, you might even find that fasting helps simplify your day since you need to plan fewer meals.
Whats more, it doesnt typically require calorie counting, watching your macros, eating certain foods that you might not be used to eating, or eliminating certain foods that you otherwise enjoy.
For example, having an early dinner followed by a late breakfast the next day is one way to fast intermittently. If you finish your last meal at 8 p.m. and dont eat until noon the next day, youve technically fasted for 16 hours.
For people who get hungry in the morning and like to eat breakfast, or for those who cant eat until later in the evening due to work schedules and other obligations, this method may be hard to get used to.
However, other people instinctively eat this way already. They may be more prone to trying out an intermittent fasting eating pattern.
What Time Should I Break My Fast

The reason I started the 2 Meal Day was to take the focus away from time periods. When you focus on time periods or counting calories you can end up getting obsessed and eating because the clock tells you to rather than listening to your body. When you first start fasting you may have to be strict with the 14-16 hour gap you are aiming for, but once you are using body fat for fuel and your hunger hormones have normalised you should eat your first meal when you feel hungry! Some days this might be 11am some days it might not be until 2-3pm. The beauty of this way of eating is you will learn when your body needs food and when it doesnt.
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Youll Likely Feel Hungry
Even an 8- or 12-hour fast might feel like a long time when youre not used to fasting.
You may go to bed hungry several times per week. That may naturally feel unpleasant and unsustainable in the long term .
Plus, at times, it might be necessary to override your natural hunger and fullness cues in order to not break your fast earlier than planned.
This doesnt mean that fasting isnt a schedule you can get used to. Once youve adjusted to intermittent fasting, you might even find it makes you feel less hungry (
What Is Intermittent Fasting
Intermittent fasting restricts when or how much you eat and sometimes both. One variation, time-restricted eating, involves eating only during a certain time window, usually eight hours, over a single day. For example, you would eat only during the hours of 9 a.m. to 5 p.m. and then fast during the other 16 hours.
The other approaches, alternate-day and whole-day fasting, actually don’t involve strict fasting. Instead, you choose two or more days during the week when you cut way back on the food you eat, limiting yourself to just 400 to 600 calories per day. On the other days of the week, you follow your normal eating pattern. In one popular version, the 5:2 diet, you eat normally for five days, then restrict your calories on two non-consecutive days. With alternate-day fasting, you eat a calorie-restricted diet every other day.
Read Also: 8 Hour Fasting Weight Loss
How Do I Combine Fasting With Atkins 20
While we do not suggest that you combine these two approaches. However, if you are keen on combing the two, we recommend starting your low carb diet for 23 weeks prior to fasting so that you can safely and completely adapt your body.
We do suggest pairing intermittent fasting with an Atkins 100-type approach, which allows for a few more fiber-rich carbohydrates each day. This can reduce some of the stress that may occur when strict carbohydrate restriction is paired with IF. Atkins 100 also more closely resembles the research that has combined low carb eating with fasting.
How Safe Is Intermittent Fasting
The 12 hour intermittent fasting Keto or Ketogenic diet and other carbohydrate-restricted diets aim to achieve ketosis, which is an accumulation of acidic ketones in the blood. As much as the outcomes are great, ketosis can cause liver, brain, and kidney damage. It is unsafe for individuals with chronic disorders such as diabetes and heart disease. Your blood sugar should also be stable for you to follow this diet plan. Therefore, it is important to discuss with your doctor and seek guidance from a licensed dietitian before beginning 12 hour intermittent fasting.
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What Should You Eat While Intermittent Fasting
Because intermittent fasting targets when you eat, you might wonder if you can eat whatever you want on an intermittent fasting plan.
Its true that some people eat lots of sweet and processed foods while on intermittent fasting. However, experts say feeding your body nutritious foods is essential.
Gutschow recommends trying to strike a balance between nutrient-dense options and the treats you crave.
Opting for healthy foods during your non-fasting window can help you keep your calorie intake in check while giving your body what it needs to function at its best.
If you need more guidance, our intermittent fasting guide can help.
So Whats The Best Eating Strategy For Fast Results
As weve discussed, both of the eating strategies above are capable of producing results. This is due to the fact that both plans result in a lowered caloric intake.
When its all said and done, weight loss comes from caloric balance.
Remember the junk food diet where the professor lost weight eating restricted calories of only vending machine food? As long as you are taking in fewer calories that you are burning, you will end up losing weight.
While both of the strategies above end up curbing your calories, only the Six-Small-Meals plan encourages wholesome calories that are ideal for burning fat and building muscle, which is why this is the plan most used by body builders and fitness competitors.
When it comes down to you choosing your own eating strategy its important to determine what will work best with your lifestyle. If carrying a cooler with you and making time to stop every 3 hours to eat a meal is simply not something you can see yourself doing, then Intermittent Fasting may produce better results for you. The key is to figure out a plan for restricting calories that you would realistically be motivated to stick with. And the more wholesome the content of those restricted calories, the better and quicker your results will come!
Want more guidance as you take your body from flab to fab? We’d love to help you! Contact us and lets get you on track to shed some major fat before summer!
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How Long Should You Fast To Lose Weight
You can fast for 12 hours to see long-term weight loss results. Other intermittent fasting options, like fasting for 16 hours or skipping meals, can help you lose fat.
Intermittent fasting has plenty of methods that cater to peoples dietary, fitness, and daily needs.
You can choose eating patterns suitable for your weight loss goals. The 12-hour fasting option is popular among beginners who dont feel comfortable with a routine yet.
Another method is to fast for 16 hours and use 8 hours for the next eating window. Many people choose this fasting option if they dont see weight loss results from previous intermittent fasting techniques. Most people skip breakfast during fasting and finish eating by 8 PM.
Changing your diet or eating schedule will always have some kind of fat-burning effect on your body. Intermittent fasting is similar to reducing your calorie consumption throughout the day. If youre on a calorie deficit , youre bound to lose fat at a sustainable pace.
What Is The Science Behind Intermittent Fast

While there is data suggesting that IF can be beneficial, a major limitation of this data is many studies use a variety of approaches to fasting, which makes the research difficult to summarize. Some studies show a benefit of 14:10 time restricted eating, while others look at the benefits of alternate day fasting. One important thing to note is that in general, the clinical studies using IF tend to be shorter than 2 years, so the long term sustainability of this approach remains to be determined. Furthermore, it is not clear whether all of the benefits of IF come directly from fasting, or indirectly from weight loss.
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How Can Intermittent Fasting Reduce Insulin Resistance
Intermittent fastings effect on insulin sensitivity has been a hot topic in recent years. In a 2018 study, researchers found a link between therapeutic fasting and reversing insulin resistance, permitting patients to wean off insulin therapy without altering their blood sugar levels. This link between insulin and fasting has also helped patients shed significant amounts of body weight and reduced their waist circumference.
A secondary study which analyzed intermittent fasting and insulin resistance found participants who fasted saw a 3-6% reduction in their blood sugar, and lowered their insulin by 20-31%. Researchers involved with the study suggest that fasting is equally as effective as traditional calorie reduction methods to accelerate weight loss and protect heart health, and can also help inhibit the progression of Type 2 diabetes.
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. Itâs one less decision I have to make, itâs 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, itâs an opportunity to do it wrong and accidentally eat foods that knock you out of ketosis.
Youâre also tempted to overeat.
Your value may vary!
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Im Trying To Fast But I Feel Like Its Reducing My Energy Levels Is This Normal
It is very normal to feel tired or to have low energy levels when you first start fasting. This can also happen when you first start a new fasting schedule. But if you stick with a set intermittent fasting schedule or fasting duration for 2-3 weeks, you should adapt and have similar energy levels during your fasting windows or days as during your eating windows or days.
However, if you continue to feel tired or to have low energy levels while fasting, you may be overdoing it. You may fasting for too long too often, or not getting enough calories in during your eating windows. If you are already at a healthy BMI, reduce your fast durations or spread your fasts further apart.
To boost your fasting energy levels, you should also:
How To Use Intermittent Fasting To Lose Weight
When using fasting to lose weight, you will eat all of your meals in a 6-8 hour eating window. This is best accomplished by going 5-6 hours upon waking before having your first meal. Your last meal should be around 2 hours before going to sleep.
Example:
Meal 2 at 6-7pm.
Meal 3 at 10pm.
By skipping a morning breakfast you force your body to break into its fat stores to fuel itself instead of burning food energy. That is why intermittent fasting is the ultimate fat loss diet for men and women! In addition, by pushing your first meal later into the day you can enjoy big, satisfying healthy meals while staying in a caloric deficit.
If you havent skipped breakfast before it may take some getting used to. This is probably the hardest part about transitioning into using intermittent fasting for fat loss.
But after a few days of skipping breakfast your body will learn to thrive in the fasted state. You will stimulate the sympathetic system and feel effects such as alertness, laser like focus, and a hunger blunting effect.
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Sprinly Review: Pros Cons Cost And More
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Sprinly is a company that delivers delicious plant-based meals directly to your door to help make healthy living easier.
The company offers a rotating weekly menu with several vegan, gluten-free dishes to choose from, all of which are made using fresh, high quality ingredients.
The service also has multiple subscription plans available that make it somewhat flexible to fit your needs.
This article takes a closer look at the pros and cons of Sprinly to help you decide whether its a good fit for you.
Why Should I Fast
There are many benefits of intermittent fasting. They include weight loss, reduced inflammation, improved lipid levels or biomarkers of heart health, improved blood sugar control, improved insulin sensitivity and increased cellular recycling known scientifically as autophagy. Overnight fasting can also help prevent weight gain and preserve metabolic health and glycemic control. Intermittent fasting may be particularly beneficial for overweight individuals in terms of improving their expected healthspan, or length of healthy life.
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May Increase Your Life Span
There are several reasons that intermittent fasting may positively impact our life span weight loss, decreased blood pressure, and most of the benefits we listed above may all contribute to prolonging our life while also increase our quality of life at the same time.
Intermittent fasting has been found to affect longevity in animal studies, having beneficial effects on life span and markets for health, stress, metabolic response, and age-related diseases .
These findings are hard to confirm in human trials as there are many factors that affect epidemiological studies and many different types of fasting. But at the end of the day, some of the benefits of intermittent fasting may increase our quality of life overall and reduce our risk of developing chronic diseases.