In particular, consider fasting together with your family, small group, or church. Do you share together in some special need for God’s wisdom and guidance? Is there an unusual difficulty in the church, or society, for which you need God’s intervention? Do you want to keep the second coming of Christ in view? Plead with special earnestness for God’s help by linking arms with other believers to fast together.
As far back as the 1930s, scientists have been exploring the benefits of reducing calories by skipping meals. During that time, one American scientist found that significantly reducing calories helped mice live longer, healthier lives. More recently, researches have found the same in fruit flies, roundworms and monkeys. Studies have also shown that decreasing calorie consumption by 30 to 40 percent (regardless of how it’s done) can extend life span by a third or more. Plus, there’s data to suggest that limiting food intake may reduce the risk of many common diseases. Some believe fasting may also increase the body’s responsiveness to insulin, which regulates blood sugar and helps control hunger.
Biblical fasting is a spiritual discipline which was encouraged by Jesus, Himself, while He was on earth. When questioned as to why the Pharisees and the disciples of John the Baptist fasted while Jesus disciples did not, Jesus answered, "How can the guests of the bridegroom mourn while he is with them? The time will come when the bridegroom will be taken from them; then they will fast” (Matthew 9:15).
How It Works: Warriors-in-training can expect to fast for about 20 hours every day and eat one large meal every night. What you eat and when you eat it within that large meal is also key to this method. The philosophy here is based on feeding the body the nutrients it needs in sync with circadian rhythms and that our species are “nocturnal eaters, inherently programmed for night eating.”
"How long you fast is entirely up to you and the leadership of the Holy Spirit. The Bible gives examples of fasts that lasted one day or part of a day (Judges 20:26; 1 Samuel 7:6; 2 Samuel 1:12; 3:35; Nehemiah 9:1; Jeremiah 36:6), a one-night fast (Daniel 6:18–24), three-day fasts (Esther 4:16; Acts 9:9), seven-day fasts (1 Samuel 31:13; 2 Samuel 12:16–23), a fourteen-day fast (Acts 27:33–34), a twenty-one day fast (Daniel 10:3–13), forty-day fasts (Deuteronomy 9:9; 1 Kings 19:8; Matthew 4:2), and fasts of unspecified lengths (Matthew 9:14; Luke 2:37; Acts 13:2; 14:23)." -What Christians Need to Know about Fasting by Sam Storms
The five most common methods of intermittent fasting try to take advantage of each of these benefits. But different methods will yield better results for different people. “If you’re going to force yourself to follow a certain method, it’s not going to work,” says trainer and fitness expert Nia Shanks. “Choose a method that makes your life easier,” she says. Otherwise, it’s not sustainable and the benefits of your fasting may be short-lived.

Fasting can take some time to get used to, as your body sheds old habits and learns new ones. But listen to your body! If you’re in hour 10 of 16 hours of fasting and feel like you absolutely need a snack, then have one. If your fasting time is up but you’re not hungry yet, wait until you are. There are no hard and fast rules here. You’re not “messing up.” You might find it helpful to jot down a sentence or two each day about how you felt; you might find that certain times of the  month or year, different types of fasts work better for you.


I’ll share some of my experiences, now doing heavy strength training for 3 years in a fasted state: For my first “fasted” workout or two after starting an IF protocol, it was very weird to not eat before training. However, after a few sessions, I learned that my body could certainly function (and even thrive) during my training sessions despite not eating a pre-workout meal.
To summarize this experiment, I will be following the ketogenic diet for 90-days without taking a break. I will also be fasting for 24hrs on Mondays, Wednesdays, and Fridays. By the end of each 24 hours, I will workout and cap it off with a keto meal that only has 25 grams of carbs and a load of fat. On Tuesdays, Thursdays, Saturdays, and Sundays, I will be eating 3–4 meals.
In addition to our attitudes towards God and our stance before man, our motives must also be correct. We should fast in order to further the building up of God’s kingdom by seeking to minister to others. The prophet Isaiah received from the Lord the acceptable motives for our fasts: “Is not this the kind of fasting I have chosen: to loose the chains of injustice and untie the cords of the yoke, to set the oppressed free and break every yoke? Is it not to share your food with the hungry and to provide the poor wanderer with shelter -- when you see the naked, to clothe him, and not to turn away from your own flesh and blood?” (Isaiah 58:6-7).
Dietrich Bonhoeffer, in his book The Cost of Discipleship, said, “Jesus takes it for granted that His disciples will observe the pious custom of fasting. Strict exercise of self-control is an essential feature of the Christian life. Such customs have only one purpose — to make the disciples more ready and cheerful to accomplish those things which God would have done.”
Through the years, I have learned that many people in the church have never been taught about fasting and prayer, and many have therefore never fasted and prayed. As a result, they don't know why fasting and praying are important, what the Bible teaches about fasting, or how to fast. To many, fasting sounds like drudgery -- or a form of religious works. To others, fasting sounds extremely difficult. People tend to stand in awe at reports of those who have fasted for several weeks. When I hear about such fasts, I no doubt think what they think: If I fasted that long, I'd die! I couldn't possibly do that!
Jesus was teaching that after His departure, the entire dynamic would change and the disciples would need a different type of preparation and provision. Fasting was to be a vital part of this new preparation. The new covenant is based on the truth that we have received everything in Christ, “Praise be to the God and Father of our Lord Jesus Christ, who has blessed us in the heavenly realms with every spiritual blessing in Christ” (Ephesians 1:3).
Those fasting may experience side effects of fatigue, malaise, aches and pains, emotional duress, acne, headaches, allergies, swelling, vomiting, bad breath, and symptoms of colds and flu. These reactions are sometimes called healing crises, which are caused by temporarily increased levels of toxins in the body due to elimination and cleansing. Lower energy levels should be expected during a fast.
Saint Augustine's Prayer Book defines "Fasting, usually meaning not more than a light breakfast, one full meal, and one half meal, on the forty days of Lent."[45] Abstinence, according to Saint Augustine's Prayer Book, "means to refrain from some particular type of food or drink. One traditional expression of abstinence is to avoid meat on Fridays in Lent or through the entire year, except in the seasons of Christmas and Easter. It is common to undertake some particular act of abstinence during the entire season of Lent. This self-discipline may be helpful at other times, as an act of solidarity with those who are in need or as a bodily expression of prayer."[46]
Fasting is important, more important perhaps, than many of us have supposed . . . when exercised with a pure heart and a right motive, fasting may provide us with a key to unlock doors where other keys have failed; a window opening up new horizons in the unseen world; a spiritual weapon of God’s provision, mighty, to the pulling down of strongholds. [Arthur Wallis, God’s Chosen Fast].

In addition to these, there is the fast of repentance which a person keeps after committing sin, it being imposed as a penance by the priest for seven days, forty days or one year. There is also a fast which a bishop keeps at the time he is consecrated. Also there are fasts that are widely observed but which have not been included in the canon of the church and which are therefore considered strictly optional such as the "Tsige Tsom" or Spring Fast, also known as "Kweskwam Tsom" which marks the exile of the Holy Family in Egypt.


^ McKnight, Scot (2010). Fasting: The Ancient Practices. Thomas Nelson. p. 88. ISBN 9781418576134. John Wesley, in his Journal, wrote on Friday, August 17, 1739, that "many of our society met, as we had appointed, at one in the afternoon and agreed that all members of our society should obey the Church to which we belong by observing 'all Fridays in the year' as 'days of fasting and abstinence.'
Thirty-six young healthy male volunteers were placed on a 24-week calorie-restricted diet of about 1,600 calories per day. They also had to walk for about 45 minutes a day. But instead of resulting in continuous weight loss, at 24 weeks their weight had stabilized, and no more weight loss could be elicited even when he reduced calorie intake down to 1,000 or less per day.
Study after study confirms that any form of intermittent fasting will help reduce weight and improve body composition, though the results are probably about the same as you’d see from restricting your calories. One study Varady ran, published in 2017 in JAMA Internal Medicine, found that after dieting for one year, people lost about 5–6% of their bodyweight whether they restricted their calories or tried alternate-day fasting.
Those desiring to receive Holy Communion keep a total fast from all food and drink from midnight the night before (see Eucharistic discipline). The sole exception is the Communion offered at the Easter Sunday midnight liturgy, when all are expressly invited and encouraged to receive the Eucharist, regardless of whether they have kept the prescribed fast.
Scot McKnight is an Anabaptist theologian and is the Karl A. Olsson Professor in Religious Studies at North Park University. The author of more than10 books and numerous articles and chapters in multi-authored works, McKnight specializes in historical Jesus studies as well as the Gospels and the New Testament. As an authority in Jesus studies, McKnight has been frequently consulted by Fox News, WGN, US News & World Report, Newsweek, TIME, as well as newspapers throughout the United States.
Jesus was indicating that fasting would become a necessity when, the bridegroom (Jesus) was taken away. While Jesus, who was God manifested in human form, was still on earth, His followers enjoyed a close fellowship and friendship with Him. Jesus bestowed power and authority on them to the extent that they had limited power to preach, heal the sick, and cast out devils. Similarly, when Jesus sent them out to minister to the populace, He instructed them to take few provisions. “Then Jesus asked them, ‘When I sent you without purse, bag or sandals, did you lack anything?’ ‘Nothing,’ they answered. He said to them, ‘But now if you have a purse, take it, and also a bag; and if you don't have a sword, sell your cloak and buy one’” (Luke 22:35-36).

It doesn't matter when you start your 8–hour eating period. You can start at 8am and stop at 4pm. Or you start at 2pm and stop at 10pm. Do whatever works for you. I tend to find that eating around 1pm and 8pm works well because those times allow me to eat lunch and dinner with friends and family. Breakfast is typically a meal that I eat on my own, so skipping it isn't a big deal.
Spending time in prayer and fasting is not automatically effective in accomplishing the desires of those who fast. Fasting or no fasting, God only promises to answer our prayers when we ask according to His will. 1 John 5:14-15 tells us, "This is the confidence we have in approaching God: that if we ask anything according to his will, he hears us. And if we know that he hears us - whatever we ask - we know that we have what we asked of him." In the prophet Isaiah's time, the people grumbled that they had fasted, yet God did not answer in the way they wanted (Isaiah 58:3-4). Isaiah responded by proclaiming that the external show of fasting and prayer, without the proper heart attitude, was futile (Isaiah 58:5-9).
Fasts may last for varying lengths of time -- one day, three days, seven days, and more. We should prayerfully seek the Lord about the length of our fast. Fasting should have an object in mind; we should have a clear idea of the need and purpose. One of the most pressing reasons for Christian fasting may be revival -- “Will you not revive us again...” (Psalm 85:6).

Confront injustice through fasting. Fast as a way of expressing poverty in your body, to show solidarity with those who are impoverished by injustice in our fallen world. Divest yourself of some resources – food – for the good of others. Convert what you give up in food when you fast into gifts for the poor by estimating the cost of the food you would have eaten if you hadn’t fasted and giving that amount to charities that help poor people. Use the time you would have spent eating to serve people in need and help bring more justice to the world. Use your fasting to call attention to other people’s needs, such as when you’re working to find solutions to the problems causing injustice and want to inspire others (like government leaders) to take action as well. However, be sure not to call attention to yourself, simply to try to impress others with your fasting. Use fasting to confront injustices in our own attitudes and behaviors, as well – to break the hold of unhealthy habits in your life and help you grow in holiness. Ask God to give you a clear vision of what He would like your life to look like. Then, through fasting, express your complete surrender to that vision.
The trial, which aimed to investigate how food deprivation affects the aging process, involved 218 normal and slightly overweight men and women between the ages of 21 and 51. Of the group, 143 of them were tasked with following CR, eating 25 percent fewer calories than usual — a decrease deemed feasible based on animal studies. They were to keep this regimen for two years with help from a behavioral intervention team and dietitians to make sure they were getting basic nutrition.

Methods of fasting also vary widely and cover a broad spectrum. If followed strictly, the person fasting does not partake any food or water from the previous day's sunset until 48 minutes after the following day's sunrise. Fasting can also mean limiting oneself to one meal during the day, abstaining from eating certain food types or eating only certain food types. In any case, the fasting person is not supposed to eat or even touch any animal products (i.e., meat, eggs) except dairy products. Amongst Hindus during fasting, starchy items such as Potatoes, Sago and Sweet potatoes are allowed. The other allowed food items include milk products, peanuts and fruits. It should be noted that peanuts and the starchy items mentioned above originate outside India.
Cons: Even though there is flexibility in when you eat, Leangains has pretty specific guidelines for what to eat, especially in relation to when you’re working out. The strict nutrition plan and scheduling meals perfectly around workouts can make the program a bit tougher to adhere to. (You can learn more about the specifics — as well as when to time these meals — directly from Leangains here and here.)
While this verse applies to our eternal destiny, the principle applies to our daily sojourn; as we humble and deprive our bodies through fasting, our spiritual man is made stronger and our senses more acute. This principle served the apostles well during the early church days. Their decisions were made through fasting and prayer; God gave them instructions and directions. “While they were worshiping the Lord and fasting, the Holy Spirit said, ‘Set apart for me Barnabas and Saul for the work to which I have called them.’ So after they had fasted and prayed, they placed their hands on them and sent them off” (Acts 13:2-3).

Another study, this one out of the University of Southern California, discovered that when 71 adults were placed on a five-day fast (eating between 750 and 1,100 calories a day) once every three months, they lost an average of 6 pounds, reduced inflammation levels and their waistlines and lost total body fat without sacrificing muscle mass. (2) If you want to lose weight and lose belly fat, fasting even irregularly could be the key.
Tisha B'Av and Yom Kippur are the major fasts and are observed from sunset to the following day's dusk. The remaining four fasts are considered minor and optional fasting is only observed from sunrise to dusk.[90] Both men and women can choose to observe them,[91] and a rabbi may give a dispensation if the fast represents too much of a hardship to a sick or weak person, or pregnant or nursing woman.

That means there’s certainly a type of person who won’t fare as well on it. “If you’re the type of person who wakes up ravenous, who loves breakfast, or who loves to snack, this may not be a good diet for you,” says Tinsley. “You won’t want to do something that makes it hard for you to adhere to. If this doesn’t gel with something you enjoy, you don’t need to fit yourself into this box just because intermittent fasting is popular right now.”
To begin, you may wish to try spending about 1 week, or so, eating smaller meals and abstaining from sugary foods and caffeine to prepare yourself for total fasting. The 2 days before you begin your actual fast, you might eat only fruits and vegetables, while drinking only water. This will prepare your appetite (physically) and your mind for going without your favorite foods.

In addition to its role in religion, fasting may be used to express social and political views, particularly as a gesture of protest or solidarity. The classic example of this approach was set by Mahatma Gandhi, who in the early 20th century conducted a fast in prison to atone for the violent excesses of those of his followers who did not practice his teaching of satyagraha (nonviolence) against British rule in India. Gandhi later often fasted in pursuit of similar objectives, including the removal of disabilities imposed by the government on the untouchables. Fasting has frequently been practiced to protest against war and what are considered social evils and injustices, as in the fasts of the American black comedian Dick Gregory from the 1960s in protest against the violation of civil rights of American Indians and against U.S. military activity in Southeast Asia. In 1981, 10 Irish nationalists died in a Belfast prison during a hunger strike conducted to urge recognition of themselves and their associates as political prisoners.
Nuts and seeds make great snacks that are high-fat and can be eaten around 2:30 p.m. Soaking these beforehand can help neutralize naturally occurring enzymes like phytates that can contribute to digestive problems. Eat dinner around 5:30 p.m., and just like the 8-to-6 window plan, a dinner with some sort of wild-caught fish or other clean protein source with vegetables is a great option.
Fasting is the willing abstinence or reduction from some or all food, drink, or both, for a period of time. An absolute fast or dry fasting is normally defined as abstinence from all food and liquid for a defined period. Water fasting refers to abstinence from all food and drink except water, but black coffee and tea may be consumed. Other fasts may be partially restrictive, limiting only particular foods or substances, or be intermittent.
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